diff --git a/src/common/zipstrm.cpp b/src/common/zipstrm.cpp
index 5081107137..fc5670266d 100644
--- a/src/common/zipstrm.cpp
+++ b/src/common/zipstrm.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        zipstrm.cpp
+// Name:        src/common/zipstrm.cpp
 // Purpose:     Streams for Zip files
 // Author:      Mike Wetherell
 // RCS-ID:      $Id$
@@ -1100,7 +1100,7 @@ size_t wxZipEntry::ReadDescriptor(wxInputStream& stream)
     if (m_Crc == SUMS_MAGIC)
     {
         wxZipHeader buf(stream, 8);
-        wxUint32 u1 = buf.GetSize() >= 4 ? buf.Read32() : LOCAL_MAGIC;
+        wxUint32 u1 = buf.GetSize() >= 4 ? buf.Read32() : (wxUint32)LOCAL_MAGIC;
         wxUint32 u2 = buf.GetSize() == 8 ? buf.Read32() : 0;
 
         // look for the signature of the following record to decide which