diff --git a/configs/sam4e-ek/nsh/Make.defs b/configs/sam4e-ek/nsh/Make.defs
index af897e4c4b..6901dba7cb 100644
--- a/configs/sam4e-ek/nsh/Make.defs
+++ b/configs/sam4e-ek/nsh/Make.defs
@@ -70,7 +70,7 @@ ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
 endif
 
 ifneq ($(CONFIG_DEBUG_NOOPT),y)
-  ARCHOPTIMIZATION += $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
+  ARCHOPTIMIZATION += $(MAXOPTIMIZATION)
 endif
 
 ARCHCFLAGS = -fno-builtin