diff --git a/pkgs/servers/x11/xorg/overrides.nix b/pkgs/servers/x11/xorg/overrides.nix
index 8c3917171ecc..68a2e93cb5ff 100644
--- a/pkgs/servers/x11/xorg/overrides.nix
+++ b/pkgs/servers/x11/xorg/overrides.nix
@@ -251,6 +251,8 @@ self: super:
 
   libXvMC = super.libXvMC.overrideAttrs (attrs: {
     outputs = [ "out" "dev" "doc" ];
+    configureFlags = attrs.configureFlags or []
+      ++ malloc0ReturnsNullCrossFlag;
     buildInputs = attrs.buildInputs ++ [self.renderproto];
   });