1 files changed, 3 insertions, 1 deletions
diff --git a/src/where.c b/src/where.c
index 0e526b337..9850d22cc 100644
--- a/src/where.c
+++ b/src/where.c
@@ -2975,7 +2975,9 @@ static int whereLoopAddBtreeIndex(
   }
   if( pProbe->bUnordered || pProbe->bLowQual ){
     if( pProbe->bUnordered ) opMask &= ~(WO_GT|WO_GE|WO_LT|WO_LE);
-    if( pProbe->bLowQual )   opMask &= ~(WO_EQ|WO_IN|WO_IS);
+    if( pProbe->bLowQual && pSrc->fg.isIndexedBy==0 ){ 
+      opMask &= ~(WO_EQ|WO_IN|WO_IS);
+    }
   }
 
   assert( pNew->u.btree.nEq<pProbe->nColumn );