diff --git a/pkgs/development/libraries/libsigcxx/default.nix b/pkgs/development/libraries/libsigcxx/default.nix
index 4a309a87f2ec..f6bfff78fa26 100644
--- a/pkgs/development/libraries/libsigcxx/default.nix
+++ b/pkgs/development/libraries/libsigcxx/default.nix
@@ -10,11 +10,6 @@ stdenv.mkDerivation rec {
     url = "mirror://gnome/sources/libsigc++/${ver_maj}/${name}.tar.xz";
     sha256 = "f843d6346260bfcb4426259e314512b99e296e8ca241d771d21ac64f28298d81";
   };
-  patches = [(fetchpatch {
-    url = "https://anonscm.debian.org/cgit/collab-maint/libsigc++-2.0.git/plain"
-      + "/debian/patches/0002-Enforce-c-11-via-pkg-config.patch?id=d451a4d195b1";
-    sha256 = "19g19473syp2z3kg8vdrli89lm9kcvaqajkqfmdig1vfpkbq0nci";
-  })];
 
   nativeBuildInputs = [ pkgconfig gnum4 ];