diff --git a/examples/uniform-blocks/uniform-blocks-example.cpp b/examples/uniform-blocks/uniform-blocks-example.cpp
index 30853b9..34a7871 100644
--- a/examples/uniform-blocks/uniform-blocks-example.cpp
+++ b/examples/uniform-blocks/uniform-blocks-example.cpp
@@ -199,7 +199,7 @@ private:
   Shader mShader;
   Geometry mGeometry;
   Renderer mRenderer;
-  uint32_t mFirstActor;
+  uint32_t mFirstActor{0};
   Timer mTimer;
 };