1 files changed, 1 insertions, 0 deletions
diff --git a/src/insert.c b/src/insert.c
index 6c71391a1..3e0d696d7 100644
--- a/src/insert.c
+++ b/src/insert.c
@@ -96,6 +96,7 @@ const char *sqlite3IndexAffinityStr(sqlite3 *db, Index *pIdx){
         aff = SQLITE_AFF_INTEGER;
       }else{
         assert( x==XN_EXPR );
+        assert( pIdx->bHasExpr );
         assert( pIdx->aColExpr!=0 );
         aff = sqlite3ExprAffinity(pIdx->aColExpr->a[n].pExpr);
       }