diff --git a/src/logkeys.cc b/src/logkeys.cc
index 5da3cff..4964946 100644
--- a/src/logkeys.cc
+++ b/src/logkeys.cc
@@ -695,7 +695,7 @@ int main(int argc, char **argv)
   }
   else if (!args.keymap.empty())  // custom keymap in use
     parse_input_keymap();
-  else
+  else if (!args.us_keymap)
     determine_system_keymap();
   
   if (args.device.empty()) {  // no device given with -d switch