diff --git a/Makefile b/Makefile
index e1cbda1..feb117d 100644
--- a/Makefile
+++ b/Makefile
@@ -12,7 +12,7 @@ LDFLAGS += -flto
 endif
 
 ifeq ($(32),y)
-CFLAGS  += -m32 -fno-plt -freg-struct-return
+CFLAGS  += -m32 -mregparm=3 -fno-plt -freg-struct-return
 LDFLAGS += -m32
 else
 CFLAGS  += -m64