diff --git a/bazaar/Serial/SerialWindows.cpp b/bazaar/Serial/SerialWindows.cpp
index 19591bbb9..d12b2d238 100644
--- a/bazaar/Serial/SerialWindows.cpp
+++ b/bazaar/Serial/SerialWindows.cpp
@@ -356,7 +356,7 @@ namespace Upp
 			req -= count;
 			buf += count;
 			
-			if(!req || (uint32_t)msecs() > timeout)
+			if(!req || (uint32_t)msecs() > tim)
 				break;
 		}