Index: src/os_unix.c
==================================================================
--- src/os_unix.c
+++ src/os_unix.c
@@ -5238,13 +5238,13 @@
             unixShmUnlock(pFile, p, UNIX_SHM_B);
             p->lockState = p->readLock = SQLITE_SHM_READ;
           }
         }
       }else if( p->lockState==SQLITE_SHM_WRITE ){
+        rc = unixShmSharedLock(pFile, p, UNIX_SHM_A);
         unixShmUnlock(pFile, p, UNIX_SHM_C|UNIX_SHM_D);
-        p->lockState = p->readLock;
-        rc = SQLITE_OK;
+        p->lockState = SQLITE_SHM_READ;
       }else{
         assert( p->lockState==SQLITE_SHM_RECOVER );
         unixShmUnlock(pFile, p, UNIX_SHM_MUTEX);
         sqlite3_mutex_leave(pFile->mutexRecov);
         p->lockState = p->readLock;