diff --git a/pkgs/development/tools/analysis/rr/default.nix b/pkgs/development/tools/analysis/rr/default.nix
index bc0fc26fc749..da180f0d4b7a 100644
--- a/pkgs/development/tools/analysis/rr/default.nix
+++ b/pkgs/development/tools/analysis/rr/default.nix
@@ -44,8 +44,6 @@ stdenv.mkDerivation rec {
   ];
   propagatedBuildInputs = [ gdb ]; # needs GDB to replay programs at runtime
   cmakeFlags = [
-    "-DCMAKE_C_FLAGS_RELEASE:STRING="
-    "-DCMAKE_CXX_FLAGS_RELEASE:STRING="
     "-Ddisable32bit=ON"
   ];