diff --git a/Makefile b/Makefile
index 83f4e0d..1089bb8 100644
--- a/Makefile
+++ b/Makefile
@@ -406,7 +406,7 @@ clean-lean: rm-lean
 
 .PHONY: rm-lean
 rm-lean:
-	if test -d $(ROOT_PATH); then find $(ROOT_PATH) -maxdepth 1 -name '*.lean' $(LEANFILES:%=-a ! -name $(ROOT_PATH)/%) -delete; fi
+	if test -d $(ROOT_PATH); then find $(ROOT_PATH) -maxdepth 1 -name '*.lean' $(LEANFILES:%=-a ! -path $(ROOT_PATH)/%) -delete; fi
 
 $(ROOT_PATH).lean:
 ifneq ($(SET_STI_FILES),1)
diff --git a/config b/config
index 2ad035d..32fdb66 100755
--- a/config
+++ b/config
@@ -170,9 +170,9 @@ then
     echo create deps.mk ...
     rm -f deps.mk
     touch deps.mk
-    set $base_rocqfiles
-    if test $# -gt 0
+    if test -n "$base_rocqfiles"
     then
+        set $base_rocqfiles
         echo -n ${1}o >> deps.mk
         shift
         for f in $*