diff --git a/libs/libcommon/include/common/StackTrace.h b/libs/libcommon/include/common/StackTrace.h
index 1abea887d54..9c27ffdcc65 100644
--- a/libs/libcommon/include/common/StackTrace.h
+++ b/libs/libcommon/include/common/StackTrace.h
@@ -45,7 +45,7 @@ protected:
     void tryCapture();
     static std::string toStringImpl(const Frames & frames, size_t size);
 
-    size_t size;
+    size_t size = 0;
     Frames frames;
 };