diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f922443..c3e7899 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -86,7 +86,7 @@ jobs:
             -D PLATFORM=Android \
             -D ANDROID_ABI=${{ matrix.arch }} \
             -D ANDROID_PLATFORM=21 \
-            -D CMAKE_C_FLAGS=${{ matrix.cflags }}
+            -D CMAKE_C_FLAGS="${{ matrix.cflags }}"
           cmake --build build --config Release
 
       - name: upload build