Index: src/btree.c
==================================================================
--- src/btree.c
+++ src/btree.c
@@ -3428,11 +3428,11 @@
     /* Even if there was no transaction opened when this function was
     ** called, a race condition may cause an SQLITE_BUSY_SNAPSHOT error
     ** in wal mode (since the code above opens a read-transaction and then
     ** upgrades it to a write-transaction - it does not take the write lock
     ** atomically). In this case change the error code to SQLITE_BUSY.  */
-    assert( wrFlag );
+    assert( wrflag );
     rc = SQLITE_BUSY;
   }
 
 
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