diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 00e420ffa6b0..46d31a59d5a6 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7065,7 +7065,7 @@ let
         ++ lib.optional (enableAdobeFlash)  flashplayer
         # RealPlayer is disabled by default for legal reasons.
         ++ lib.optional (system != "i686-linux" && getConfig [browserName "enableRealPlayer"] false) RealPlayer
-        ++ lib.optional (getConfig [browserName "enableMPlayer"] true) (MPlayerPlugin browser)
+        ++ lib.optional (getConfig [browserName "enableMPlayer"] false) (MPlayerPlugin browser)
         ++ lib.optional (supportsJDK && getConfig [browserName "jre"] false && jrePlugin ? mozillaPlugin) jrePlugin
        );
   };