diff --git a/libc/stdio/Make.defs b/libc/stdio/Make.defs
index 411fa98686..38a62d69c1 100644
--- a/libc/stdio/Make.defs
+++ b/libc/stdio/Make.defs
@@ -50,7 +50,7 @@ CSRCS += lib_sscanf.c
 ifneq ($(CONFIG_NFILE_DESCRIPTORS),0)
 
 CSRCS += lib_rawinstream.c lib_rawoutstream.c lib_rawsistream.c
-CSRCS += lib_rawsostream.c
+CSRCS += lib_rawsostream.c lib_libnoflush.c lib_libsnoflush.c
 CSRCS += lib_remove.c
 
 # And these depend upon both file descriptors and C streams
@@ -65,7 +65,7 @@ CSRCS += lib_rdflush.c lib_wrflush.c lib_fputc.c lib_puts.c lib_fputs.c
 CSRCS += lib_ungetc.c lib_vprintf.c lib_fprintf.c lib_vfprintf.c
 CSRCS += lib_stdinstream.c lib_stdoutstream.c lib_stdsistream.c
 CSRCS += lib_stdsostream.c lib_perror.c lib_feof.c lib_ferror.c
-CSRCS += lib_clearerr.c lib_libnoflush.c lib_libsnoflush.c
+CSRCS += lib_clearerr.c
 
 endif