diff --git a/mach/m68k4/libfp/Makefile b/mach/m68k4/libfp/Makefile
index 0cf8beaa2..370c22bce 100644
--- a/mach/m68k4/libfp/Makefile
+++ b/mach/m68k4/libfp/Makefile
@@ -1,7 +1,7 @@
 EMHOME=../../..
 SUF=o
 MAKEFILE=$(EMHOME)/mach/proto/fp/Makefile
-MACHDEF="MACH=m68k4" "CFLAGS=-DIEEEFORMAT" "SUF=$(SUF)" "ASAR=aal"
+MACHDEF="MACH=m68k4" "SUF=$(SUF)" "ASAR=aal"
 
 all:
 	make -f $(MAKEFILE) $(MACHDEF) all