1 files changed, 1 insertions, 1 deletions
diff --git a/Rules.mak b/Rules.mak
index 88911d59f..887933dd3 100644
--- a/Rules.mak
+++ b/Rules.mak
@@ -34,7 +34,7 @@ endif
 
 ARFLAGS=r
 
-CCFLAGS=$(WARNINGS) $(OPTIMIZATION) -fno-builtin -nostdinc $(CPUFLAGS) -I$(TOPDIR)include -I$(GCCINCDIR) -I. -D__LIBC__
+CCFLAGS=$(WARNINGS) $(OPTIMIZATION) -fno-builtin -nostdinc $(CPUFLAGS) -I$(TOPDIR)include -I$(GCCINCDIR) -I. -D_LIBC
 
 CFLAGS=$(ARCH_CFLAGS) $(CCFLAGS) $(DEFS) $(ARCH_CFLAGS2)