diff --git a/.github/workflows/build_qt6.yml b/.github/workflows/build_qt6.yml
index 98b397e236..d525aac720 100644
--- a/.github/workflows/build_qt6.yml
+++ b/.github/workflows/build_qt6.yml
@@ -42,7 +42,7 @@ jobs:
             os: macos-latest,
             cc: "clang", cxx: "clang++",
             build_type: "Release",
-            cmake_flags: "-G Ninja -DCMAKE_OSX_ARCHITECTURES=arm64;x86_64",
+            cmake_flags: "-G Ninja -DCMAKE_OSX_ARCHITECTURES='arm64;x86_64'",
             cpack_flags: "-G DragNDrop",
           }
         - {