1 files changed, 1 insertions, 1 deletions
diff --git a/src/update.c b/src/update.c
index 7511c7916..b65bd0187 100644
--- a/src/update.c
+++ b/src/update.c
@@ -246,7 +246,7 @@ void sqlite3Update(
   }
   for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){
     int reg;
-    if( hasFK || chngRowid ){
+    if( hasFK || chngRowid || pIdx->pPartIdxWhere ){
       reg = ++pParse->nMem;
     }else{
       reg = 0;