diff --git a/pkgs/development/compilers/gcc/4.9/default.nix b/pkgs/development/compilers/gcc/4.9/default.nix
index d38040a48b3..40244cab94f 100644
--- a/pkgs/development/compilers/gcc/4.9/default.nix
+++ b/pkgs/development/compilers/gcc/4.9/default.nix
@@ -153,7 +153,6 @@ let version = "4.9.1";
           " --disable-libssp --disable-nls" +
           " --without-headers" +
           " --disable-threads " +
-          " --disable-libmudflap " +
           " --disable-libgomp " +
           " --disable-libquadmath" +
           " --disable-shared" +