diff --git a/src/common/utility/tarray.h b/src/common/utility/tarray.h
index b0ab192cc5..95f4842edd 100644
--- a/src/common/utility/tarray.h
+++ b/src/common/utility/tarray.h
@@ -684,7 +684,7 @@ public:
 		Resize(i);
 	}
 
-	void push_back(T& elem)
+	void push_back(const T& elem)
 	{
 		Push(elem);
 	}