diff --git a/lib/Makefile b/lib/Makefile
index 1f4f7eb..6df2b1a 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -95,6 +95,7 @@
 
 clean:
 	@rm -f core *.o *.a *.gcda *.$(SHARED_EXT) *.$(SHARED_EXT).* libzstd.pc
+	@rm -f decompress/*.o
 	@echo Cleaning library completed
 
 #------------------------------------------------------------------------