1 files changed, 3 insertions, 1 deletions
diff --git a/src/expr.c b/src/expr.c
index 7277bb75d..2c4d23331 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -45,7 +45,9 @@ char sqlite3TableColumnAffinity(Table *pTab, int iCol){
 char sqlite3ExprAffinity(const Expr *pExpr){
   int op;
   while( ExprHasProperty(pExpr, EP_Skip|EP_IfNullRow) ){
-    assert( pExpr->op==TK_COLLATE || pExpr->op==TK_IF_NULL_ROW );
+    assert( pExpr->op==TK_COLLATE
+         || pExpr->op==TK_IF_NULL_ROW
+         || (pExpr->op==TK_REGISTER && pExpr->op2==TK_IF_NULL_ROW) );
     pExpr = pExpr->pLeft;
     assert( pExpr!=0 );
   }