diff --git a/source/client/StarClientApplication.hpp b/source/client/StarClientApplication.hpp
index 58abb9d..fe68f22 100644
--- a/source/client/StarClientApplication.hpp
+++ b/source/client/StarClientApplication.hpp
@@ -108,7 +108,7 @@ private:
   int m_cameraOffsetDownTicks = 0;
   Vec2F m_cameraPositionSmoother;
   Vec2F m_cameraSmoothDelta;
-  int m_cameraZoomDirection;
+  int m_cameraZoomDirection = 0;
 
   int m_minInterfaceScale = 2;
   int m_maxInterfaceScale = 3;