diff --git a/app/vmselect/promql/rollup.go b/app/vmselect/promql/rollup.go
index 7b70751288..d10c40a861 100644
--- a/app/vmselect/promql/rollup.go
+++ b/app/vmselect/promql/rollup.go
@@ -955,11 +955,11 @@ func newRollupHoltWinters(args []interface{}) (rollupFunc, error) {
 			return rfa.prevValue
 		}
 		sf := sfs[rfa.idx]
-		if sf <= 0 || sf >= 1 {
+		if sf < 0 || sf > 1 {
 			return nan
 		}
 		tf := tfs[rfa.idx]
-		if tf <= 0 || tf >= 1 {
+		if tf < 0 || tf > 1 {
 			return nan
 		}
 
diff --git a/app/vmselect/promql/rollup_test.go b/app/vmselect/promql/rollup_test.go
index 12a3b0acbc..766a33eaea 100644
--- a/app/vmselect/promql/rollup_test.go
+++ b/app/vmselect/promql/rollup_test.go
@@ -470,12 +470,12 @@ func TestRollupHoltWinters(t *testing.T) {
 	}
 
 	f(-1, 0.5, nan)
-	f(0, 0.5, nan)
-	f(1, 0.5, nan)
+	f(0, 0.5, -856)
+	f(1, 0.5, 34)
 	f(2, 0.5, nan)
 	f(0.5, -1, nan)
-	f(0.5, 0, nan)
-	f(0.5, 1, nan)
+	f(0.5, 0, -54.1474609375)
+	f(0.5, 1, 25.25)
 	f(0.5, 2, nan)
 	f(0.5, 0.5, 34.97794532775879)
 	f(0.1, 0.5, -131.30529492371622)