1 files changed, 3 insertions, 1 deletions
diff --git a/src/expr.c b/src/expr.c
index a3ed249ee..52b68b7c7 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -1941,7 +1941,9 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){
     ** and either pWalker->eCode==4 or 5 or the function has the
     ** SQLITE_FUNC_CONST flag. */
     case TK_FUNCTION:
-      if( pWalker->eCode>=4 || ExprHasProperty(pExpr,EP_ConstFunc) ){
+      if( (pWalker->eCode>=4 || ExprHasProperty(pExpr,EP_ConstFunc))
+       && !ExprHasProperty(pExpr, EP_WinFunc)
+      ){
         return WRC_Continue;
       }else{
         pWalker->eCode = 0;