diff --git a/.github/workflows/main_ci.yml b/.github/workflows/main_ci.yml
index c4ba62ae..10ac716f 100644
--- a/.github/workflows/main_ci.yml
+++ b/.github/workflows/main_ci.yml
@@ -8,7 +8,7 @@ on:
     branches:
       - main
     paths:
-      - ".github/**"
+      - "**.cpp"
 
 env:
   CMAKE_BUILD_PARALLEL_LEVEL: 3
diff --git a/src/common.cpp b/src/common.cpp
index c0185aa5..e09de736 100644
--- a/src/common.cpp
+++ b/src/common.cpp
@@ -3,6 +3,8 @@
 
 namespace MLS_NAMESPACE {
 
+static void unused() {}
+
 uint64_t
 seconds_since_epoch()
 {