diff --git a/functions/__fisher_path_make.fish b/functions/__fisher_path_make.fish
index 657383d..0b42bf8 100644
--- a/functions/__fisher_path_make.fish
+++ b/functions/__fisher_path_make.fish
@@ -1,5 +1,5 @@
 function __fisher_path_make -a path
-    if test ! -s $path/Makefile -o ! -s $path/makefile
+    if test ! -s $path/Makefile -a ! -s $path/makefile
         return
     end