diff --git a/pkgs/applications/video/gnash/default.nix b/pkgs/applications/video/gnash/default.nix
index 4713ebf4d547..668fdb7edab5 100644
--- a/pkgs/applications/video/gnash/default.nix
+++ b/pkgs/applications/video/gnash/default.nix
@@ -48,6 +48,8 @@ stdenv.mkDerivation rec {
   # Make sure `gtk-gnash' gets `libXext' in its `RPATH'.
   NIX_LDFLAGS="-lX11 -lXext";
 
+  doCheck = true;
+
   preInstall = ''ensureDir $out/plugins'';
   postInstall = ''make install-plugins'';