diff --git a/Makefile.am b/Makefile.am
index 3dcbea74..4847ea69 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -225,7 +225,7 @@ endif
 	$(TESTENV) ./snapraid$(EXEEXT) $(CHECKFLAGS) --gen-conf bench/content
 	echo --- Filter
 	$(TESTENV) ./snapraid$(EXEEXT) $(CHECKFLAGS_VERBOSE) -c $(CONF) -d disk1 check
-	$(TESTENV) ./snapraid$(EXEEXT) $(CHECKFLAGS_VERBOSE) -c $(CONF) -f "*a" -f "a/" -f "/b/a*" check
+	$(TESTENV) ./snapraid$(EXEEXT) $(CHECKFLAGS_VERBOSE) -c $(CONF) -f \\*a -f a/ -f /b/a\\* check
 	echo --- Delete some files and sync
 	rm bench/disk4/a/9*
 	rm bench/disk5/a/9*