diff --git a/UnitTests/CButton/Makefile b/UnitTests/CButton/Makefile
index 778d46513..d80ef3c76 100644
--- a/UnitTests/CButton/Makefile
+++ b/UnitTests/CButton/Makefile
@@ -159,11 +159,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/UnitTests/CButtonArray/Makefile b/UnitTests/CButtonArray/Makefile
index 39af8ff3a..b4a3b0571 100644
--- a/UnitTests/CButtonArray/Makefile
+++ b/UnitTests/CButtonArray/Makefile
@@ -159,11 +159,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/UnitTests/CCheckBox/Makefile b/UnitTests/CCheckBox/Makefile
index 583817857..21e007b3d 100644
--- a/UnitTests/CCheckBox/Makefile
+++ b/UnitTests/CCheckBox/Makefile
@@ -159,11 +159,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/UnitTests/CGlyphButton/Makefile b/UnitTests/CGlyphButton/Makefile
index e61f960d1..1e7faf026 100644
--- a/UnitTests/CGlyphButton/Makefile
+++ b/UnitTests/CGlyphButton/Makefile
@@ -159,11 +159,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/UnitTests/CImage/Makefile b/UnitTests/CImage/Makefile
index 88e786505..61978147e 100644
--- a/UnitTests/CImage/Makefile
+++ b/UnitTests/CImage/Makefile
@@ -159,11 +159,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/UnitTests/CKeypad/Makefile b/UnitTests/CKeypad/Makefile
index 873b7a695..d27b90192 100644
--- a/UnitTests/CKeypad/Makefile
+++ b/UnitTests/CKeypad/Makefile
@@ -159,11 +159,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/UnitTests/CLabel/Makefile b/UnitTests/CLabel/Makefile
index 5122558ff..14e8897d2 100644
--- a/UnitTests/CLabel/Makefile
+++ b/UnitTests/CLabel/Makefile
@@ -159,11 +159,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/UnitTests/CLatchButton/Makefile b/UnitTests/CLatchButton/Makefile
index d38872079..435a4c3cd 100644
--- a/UnitTests/CLatchButton/Makefile
+++ b/UnitTests/CLatchButton/Makefile
@@ -159,11 +159,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/UnitTests/CLatchButtonArray/Makefile b/UnitTests/CLatchButtonArray/Makefile
index 94a2bc49e..0f6fe639f 100644
--- a/UnitTests/CLatchButtonArray/Makefile
+++ b/UnitTests/CLatchButtonArray/Makefile
@@ -159,11 +159,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/UnitTests/CListBox/Makefile b/UnitTests/CListBox/Makefile
index ca9055870..301424c47 100644
--- a/UnitTests/CListBox/Makefile
+++ b/UnitTests/CListBox/Makefile
@@ -159,11 +159,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/UnitTests/CProgressBar/Makefile b/UnitTests/CProgressBar/Makefile
index b9c498df9..d50d3ed05 100644
--- a/UnitTests/CProgressBar/Makefile
+++ b/UnitTests/CProgressBar/Makefile
@@ -159,11 +159,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/UnitTests/CRadioButton/Makefile b/UnitTests/CRadioButton/Makefile
index 0a96580e0..ff6c2d247 100644
--- a/UnitTests/CRadioButton/Makefile
+++ b/UnitTests/CRadioButton/Makefile
@@ -159,11 +159,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/UnitTests/CScrollbarHorizontal/Makefile b/UnitTests/CScrollbarHorizontal/Makefile
index 0fe12318b..a5fab0dda 100644
--- a/UnitTests/CScrollbarHorizontal/Makefile
+++ b/UnitTests/CScrollbarHorizontal/Makefile
@@ -159,11 +159,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/UnitTests/CScrollbarVertical/Makefile b/UnitTests/CScrollbarVertical/Makefile
index 60fb0b545..204b90a52 100644
--- a/UnitTests/CScrollbarVertical/Makefile
+++ b/UnitTests/CScrollbarVertical/Makefile
@@ -159,11 +159,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/UnitTests/CSliderHorizonal/Makefile b/UnitTests/CSliderHorizonal/Makefile
index 5675c55bf..67f00f622 100644
--- a/UnitTests/CSliderHorizonal/Makefile
+++ b/UnitTests/CSliderHorizonal/Makefile
@@ -159,11 +159,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/UnitTests/CSliderVertical/Makefile b/UnitTests/CSliderVertical/Makefile
index 78dc6dc8d..409f361fd 100644
--- a/UnitTests/CSliderVertical/Makefile
+++ b/UnitTests/CSliderVertical/Makefile
@@ -159,11 +159,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/UnitTests/CTextBox/Makefile b/UnitTests/CTextBox/Makefile
index c913b50a4..a4c752e6c 100644
--- a/UnitTests/CTextBox/Makefile
+++ b/UnitTests/CTextBox/Makefile
@@ -159,11 +159,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/UnitTests/nxwm/Makefile b/UnitTests/nxwm/Makefile
index 205caf879..338b83e54 100644
--- a/UnitTests/nxwm/Makefile
+++ b/UnitTests/nxwm/Makefile
@@ -189,11 +189,11 @@ context: .context
 depend: .depend
 
 clean:
-	$(call DELFILE .built)
+	$(call DELFILE, .built)
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 -include Make.dep
diff --git a/libnxwidgets/Makefile b/libnxwidgets/Makefile
index 27a85b428..0c7c922ea 100644
--- a/libnxwidgets/Makefile
+++ b/libnxwidgets/Makefile
@@ -132,12 +132,12 @@ $(BIN): $(OBJS)
 depend: .depend
 
 clean:
-	$(call DELFILE $(BIN))
+	$(call DELFILE, $(BIN))
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 export: $(BIN)
 	zip -r  nxwidgets-export.zip include $(BIN) COPYING
diff --git a/nxwm/Makefile b/nxwm/Makefile
index b176ce4f7..0bea357b2 100644
--- a/nxwm/Makefile
+++ b/nxwm/Makefile
@@ -136,12 +136,12 @@ $(BIN): $(OBJS)
 depend: .depend
 
 clean:
-	$(call DELFILE $(BIN))
+	$(call DELFILE, $(BIN))
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE Make.dep)
-	$(call DELFILE .depend)
+	$(call DELFILE, Make.dep)
+	$(call DELFILE, .depend)
 
 export: $(BIN)
 	zip -r  nxwm-export.zip include $(BIN) COPYING