Index: ext/rtree/rtree.c
==================================================================
--- ext/rtree/rtree.c
+++ ext/rtree/rtree.c
@@ -3292,11 +3292,11 @@
   rtreeEof,                   /* xEof */
   rtreeColumn,                /* xColumn - read data */
   rtreeRowid,                 /* xRowid - read data */
   rtreeUpdate,                /* xUpdate - write data */
   rtreeBeginTransaction,      /* xBegin - begin transaction */
-  0,                          /* xSync - sync transaction */
+  rtreeEndTransaction,        /* xSync - sync transaction */
   rtreeEndTransaction,        /* xCommit - commit transaction */
   rtreeEndTransaction,        /* xRollback - rollback transaction */
   0,                          /* xFindFunction - function overloading */
   rtreeRename,                /* xRename - rename the table */
   0,                          /* xSavepoint */