diff --git a/pkgs/tools/networking/cjdns/default.nix b/pkgs/tools/networking/cjdns/default.nix
index 5fa39f6281b..e8dc5e370be 100644
--- a/pkgs/tools/networking/cjdns/default.nix
+++ b/pkgs/tools/networking/cjdns/default.nix
@@ -19,8 +19,9 @@ stdenv.mkDerivation rec {
     "-O2"
     "-Wno-error=array-bounds"
     "-Wno-error=stringop-overflow"
-    "-Wno-error=stringop-overread"
     "-Wno-error=stringop-truncation"
+  ] ++ lib.optionals (stdenv.cc.isGNU && lib.versionAtLeast stdenv.cc.version "11") [
+    "-Wno-error=stringop-overread"
   ];
 
   buildPhase =