Index: ext/rbu/rbu1.test
==================================================================
--- ext/rbu/rbu1.test
+++ ext/rbu/rbu1.test
@@ -609,11 +609,11 @@
        } {SQLITE_ERROR - invalid rbu_control value}
 
        9 {
          CREATE TABLE t1(a, b PRIMARY KEY) WITHOUT ROWID;
          CREATE TABLE rbu.data_t1(a, b, rbu_control);
-         INSERT INTO rbu.data_t1 VALUES(1, 2, 2);
+         INSERT INTO rbu.data_t1 VALUES(1, 2, 3);
        } {SQLITE_ERROR - invalid rbu_control value}
 
        10 {
          CREATE TABLE t2(a, b);
          CREATE TABLE rbu.data_t1(a, b, rbu_control);

Index: ext/rbu/sqlite3rbu.c
==================================================================
--- ext/rbu/sqlite3rbu.c
+++ ext/rbu/sqlite3rbu.c
@@ -2704,11 +2704,11 @@
          || eType==RBU_REPLACE    || eType==RBU_IDX_DELETE
          || eType==RBU_IDX_INSERT || eType==RBU_UPDATE
     );
     assert( eType!=RBU_UPDATE || pIter->zIdx==0 );
 
-    if( pIter->zIdx==0 && eType==RBU_IDX_DELETE ){
+    if( pIter->zIdx==0 && (eType==RBU_IDX_DELETE || eType==RBU_IDX_INSERT) ){
       rbuBadControlError(p);
     }
     else if( eType==RBU_REPLACE ){
       if( pIter->zIdx==0 ){
         p->nPhaseOneStep += p->objiter.nIndex;