1 files changed, 2 insertions, 1 deletions

diff --git a/src/so.mk b/src/so.mk
index cb1f08b08..63a0da7ce 100644
--- a/src/so.mk
+++ b/src/so.mk
@@ -6,6 +6,7 @@
 # EXTRA_OBJS and extend CLEANFILES.
 
 CC ?= cc
+RM ?= rm -f
 
 HDRS :=
 SRCS := $(sort $(wildcard $(MOD_DIR)/*.c))
@@ -27,4 +28,4 @@ $(SO): $(OBJS) $(EXTRA_OBJS) $(ROOT)/config.mk
         $(CC) $(SO_LDFLAGS) -shared $(LDFLAGS) -o $@ $(OBJS) $(EXTRA_OBJS) -ldl
 
 .PHONY: clean
-clean:; rm -fr $(SO) $(CLEANFILES)
+clean:; $(RM) -r $(SO) $(CLEANFILES)