diff --git a/.github/workflows/gs1encoders.yml b/.github/workflows/gs1encoders.yml
index b4ec2a0..4de242d 100644
--- a/.github/workflows/gs1encoders.yml
+++ b/.github/workflows/gs1encoders.yml
@@ -62,6 +62,23 @@ jobs:
         c-lib\build\console-app\Win32\Release\gs1encoders-app.exe --version
         dotnet-app\bin\Release\netcoreapp3.1\gs1encoders-dotnet-app.exe --version
 
+  ci-macos:
+
+    runs-on: macos-10.15
+
+    steps:
+
+    - uses: actions/checkout@v2
+
+    - name: clang CI
+      run: |
+        make -C src/c-lib -j `sysctl -n hw.logicalcpu` test SLOW_TESTS=yes
+        make -C src/c-lib -j `sysctl -n hw.logicalcpu` lib
+        make -C src/c-lib -j `sysctl -n hw.logicalcpu` app
+        DYLD_LIBRARY_PATH=src/c-lib/build src/c-lib/build/gs1encoders.bin --version
+        make -C src/c-lib -j `sysctl -n hw.logicalcpu` app-static
+        src/c-lib/build/gs1encoders-linux.bin --version
+
   ci-scan-build:
 
     runs-on: ubuntu-latest
diff --git a/src/c-lib/Makefile b/src/c-lib/Makefile
index b6fefd0..aadcc89 100644
--- a/src/c-lib/Makefile
+++ b/src/c-lib/Makefile
@@ -49,13 +49,8 @@ endif
 ifeq ($(SANITIZE),yes)
 CC=clang
 SAN_LDFLAGS = -fuse-ld=lld
-ifneq ($(shell uname -s),Darwin)
 SAN_CFLAGS = -fsanitize=address,leak,undefined$(FUZZER_SAN_OPT) -fno-omit-frame-pointer -fno-optimize-sibling-calls -O1
 SAN_ENV = ASAN_OPTIONS="symbolize=1 detect_leaks=1" LSAN_OPTIONS="fast_unwind_on_malloc=0:malloc_context_size=50" ASAN_SYMBOLIZER_PATH="$(shell which llvm-symbolizer)"
-else
-SAN_CFLAGS = -fsanitize=address,undefined$(FUZZER_SAN_OPT) -fno-omit-frame-pointer -fno-optimize-sibling-calls -O1
-SAN_ENV = ASAN_OPTIONS="symbolize=1" LSAN_OPTIONS="fast_unwind_on_malloc=0:malloc_context_size=50" ASAN_SYMBOLIZER_PATH="$(shell which llvm-symbolizer)"
-endif
 endif
 
 ifeq ($(SLOW_TESTS),yes)