1 files changed, 1 insertions, 1 deletions
diff --git a/src/os_win.c b/src/os_win.c
index d8a495c67..e184c3018 100644
--- a/src/os_win.c
+++ b/src/os_win.c
@@ -1207,7 +1207,7 @@ ThreadData *sqlite3WinThreadSpecificData(int allocateFlag){
       }
     }
   }else if( pTsd!=0 && allocateFlag<0 
-              && memcmp(pTsd, &zeroData, sizeof(zeroData))==0 ){
+              && memcmp(pTsd, &zeroData, THREADDATASIZE)==0 ){
     sqlite3OsFree(pTsd);
     TlsSetValue(key, 0);
     TSD_COUNTER_DECR;