diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index e8f4ab3..29a7a3d 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -22,7 +22,7 @@ jobs:
       - name: Install dependencies through apt
         run: |
           sudo apt install -y --no-install-recommends \
-            sway \
+            sway mutter \
             liblua5.3-dev libwayland-dev \
             meson ninja-build cmake
           lua -v
@@ -37,7 +37,7 @@ jobs:
           ninja all
           cp cffi.so ../..
 
-      - name: Run Tests
+      - name: Tests on SWAY
         env:
           WLR_BACKENDS: headless
           WLR_RENDERER: pixman
@@ -48,7 +48,19 @@ jobs:
           mkdir -p $XDG_RUNTIME_DIR
           chmod 0700 $XDG_RUNTIME_DIR
           sway -d &
-          sleep 20
+          sleep 10
           cd tests
           ./run.sh
           swaymsg exit || true
+
+      - name: Tests on MUTTER
+        run: |
+          export XDG_RUNTIME_DIR=/tmp/runtime
+          mkdir -p $XDG_RUNTIME_DIR
+          chmod 0700 $XDG_RUNTIME_DIR
+          mutter --wayland --sm-disable
+          sleep 10
+          cd tests
+          ./run.sh
+          pkill mutter
+