diff --git a/tqtinterface/qt4/src/3rdparty/sqlite/os.c b/tqtinterface/qt4/src/3rdparty/sqlite/os.c
index 4f16907..7918f81 100644
--- a/tqtinterface/qt4/src/3rdparty/sqlite/os.c
+++ b/tqtinterface/qt4/src/3rdparty/sqlite/os.c
@@ -1340,7 +1340,7 @@ int sqliteOsReadLock(OsFile *id){
         ovlp.Offset = FIRST_LOCKBYTE+1;
         ovlp.OffsetHigh = 0;
         ovlp.hEvent = 0;
-        res = LockFileEx(id->h, LOCTDEFILE_FAIL_IMMEDIATELY, 
+        res = LockFileEx(id->h, LOCKFILE_FAIL_IMMEDIATELY, 
                           0, N_LOCKBYTE, 0, &ovlp);
       }else{
         res = LockFile(id->h, FIRST_LOCKBYTE+lk, 0, 1, 0);