1 files changed, 1 insertions, 1 deletions

diff --git a/src/so.mk b/src/so.mk
index c1913b794..27c5695a8 100644
--- a/src/so.mk
+++ b/src/so.mk
@@ -13,7 +13,7 @@ OBJS := $(SRCS:.c=.o) $(EXTRA_OBJS)
 all: $(TARGET)
 
 %.o : %.c $(HDRS) $(ROOT)/config.mk
-        $(CC) $(SO_CFLAGS) $(CFLAGS) $(INCLUDE) -c $< -o $@
+        $(CC) $(SO_CFLAGS) $(CFLAGS) $(CPPFLAGS) -c $< -o $@
 
 $(SO): $(OBJS) $(ROOT)/config.mk
         $(CC) $(SO_LDFLAGS) -shared $(LDFLAGS) -o $@ $(OBJS) -ldl