diff --git a/.github/scripts/cmake-osx b/.github/scripts/cmake-osx
index 6bbffefe53..44ce4da268 100755
--- a/.github/scripts/cmake-osx
+++ b/.github/scripts/cmake-osx
@@ -26,6 +26,8 @@ add_flag -Werror
 add_c_flag -Wno-c11-extensions
 add_c_flag -Wno-pre-c11-compat
 
+add_flag -Wno-nrvo
+
 cmake -GNinja -B_build -H. \
   -DCMAKE_C_FLAGS="$C_FLAGS" \
   -DCMAKE_CXX_FLAGS="$CXX_FLAGS" \