diff --git a/common/content/mappings.js b/common/content/mappings.js
index 4b0d53e6..59cf3df0 100644
--- a/common/content/mappings.js
+++ b/common/content/mappings.js
@@ -292,7 +292,7 @@ function Mappings() //{{{
     addMapCommands("",  [modes.NORMAL, modes.VISUAL], "");
 
     for (let mode in modes.mainModes)
-        if (mode.char)
+        if (mode.char && !commands.get(mode.char + "map"))
             addMapCommands(mode.char,
                            [m.mask for (m in modes.mainModes) if (m.char == mode.char)],
                            [mode.disp.toLowerCase()]);