diff --git a/c_src/Makefile b/c_src/Makefile
index 1d2998d..b762894 100644
--- a/c_src/Makefile
+++ b/c_src/Makefile
@@ -72,4 +72,4 @@ $(C_SRC_OUTPUT): $(OBJECTS)
 	$(COMPILE_CPP) $(OUTPUT_OPTION) $<
 
 clean:
-	@rm $(C_SRC_OUTPUT) $(OBJECTS)
+	@rm -f $(C_SRC_OUTPUT) $(OBJECTS)