diff --git a/coin/platform_configs/cmake_platforms.yaml b/coin/platform_configs/cmake_platforms.yaml
index c32bb069..e2b63134 100644
--- a/coin/platform_configs/cmake_platforms.yaml
+++ b/coin/platform_configs/cmake_platforms.yaml
@@ -207,7 +207,7 @@ Configurations:
     Features: ['Packaging', 'Sccache', 'DebugAndRelease', 'DisableTests', 'UseConfigure']
     Environment variables: [
         'TARGET_CONFIGURE_ARGS=-debug-and-release -nomake examples -platform macx-ios-clang',
-        'NON_QTBASE_TARGET_CMAKE_ARGS=-DFEATURE_native_grpc=OFF',
+        'NON_QTBASE_TARGET_CMAKE_ARGS=-DFEATURE_native_grpc=OFF -DQT_PROTOBUF_WELL_KNOWN_TYPES_PROTO_DIR=/usr/local/include',
     ]
 -
     Id: 'windows-10_22h2-mingw11'