diff --git a/src/zlib/makefile.b32 b/src/zlib/makefile.b32
index 256f7fffa1..90662805c9 100644
--- a/src/zlib/makefile.b32
+++ b/src/zlib/makefile.b32
@@ -104,6 +104,6 @@ test: example.exe minigzip.exe
 	echo hello world | minigzip | minigzip -d 
 
 clean:
-	erase *.obj
-	erase *.exe
-    erase $(LIBTARGET)
+	-erase *.obj
+	-erase *.exe
+   -erase $(LIBTARGET)