diff --git a/lib/awful/rules.lua.in b/lib/awful/rules.lua.in
index ac4b01809..5fa86bcd1 100644
--- a/lib/awful/rules.lua.in
+++ b/lib/awful/rules.lua.in
@@ -71,6 +71,8 @@ function match(c, rule)
             elseif c[field] ~= value then
                 return false
             end
+        else
+            return false
         end
     end
     return true