diff --git a/include/ehs/Serializer.h b/include/ehs/Serializer.h
index 78b6658..3de251c 100644
--- a/include/ehs/Serializer.h
+++ b/include/ehs/Serializer.h
@@ -396,9 +396,11 @@ namespace ehs
         }
 
 		template<typename T, typename O = UInt_64>
-		void WriteStr(const T* str, const bool sizeKnown, N inSize = 0)
+		void WriteStr(const T* str, N inSize = 0)
 		{
-			if (!inSize)
+			bool sizeKnown = inSize;
+
+			if (!sizeKnown)
 				while (str[inSize])
 					inSize++;