diff --git a/src/vdbe.c b/src/vdbe.c
index 1a419c7a9..eddd1e599 100644
--- a/src/vdbe.c
+++ b/src/vdbe.c
@@ -1514,7 +1514,6 @@ case OP_AddImm: {            /* in1 */
 */
 case OP_MustBeInt: {            /* jump, in1 */
   pIn1 = &aMem[pOp->p1];
-  memAboutToChange(p, pIn1);
   applyAffinity(pIn1, SQLITE_AFF_NUMERIC, encoding);
   if( (pIn1->flags & MEM_Int)==0 ){
     if( pOp->p2==0 ){