Index: src/where.c
==================================================================
--- src/where.c
+++ src/where.c
@@ -3530,12 +3530,12 @@
       pIn->iCur = iTab;
       if( eType==IN_INDEX_ROWID ){
         pIn->addrInTop = sqlite3VdbeAddOp2(v, OP_Rowid, iTab, iReg);
       }else{
         pIn->addrInTop = sqlite3VdbeAddOp3(v, OP_Column, iTab, 0, iReg);
+        sqlite3VdbeAddOp1(v, OP_IsNull, iReg);
       }
-      sqlite3VdbeAddOp1(v, OP_IsNull, iReg);
     }else{
       pLevel->u.in.nIn = 0;
     }
 #endif
   }