diff --git a/app/vmselect/promql/rollup.go b/app/vmselect/promql/rollup.go
index 2a170d57d..1a866d2b6 100644
--- a/app/vmselect/promql/rollup.go
+++ b/app/vmselect/promql/rollup.go
@@ -403,6 +403,8 @@ func linearRegression(rfa *rollupFuncArg) (float64, float64) {
 	}
 	k := (n*tvSum - tSum*vSum) / (n*ttSum - tSum*tSum)
 	v := (vSum - k*tSum) / n
+	// Adjust v to the last timestamp on the given time range.
+	v += k * (float64(timestamps[len(timestamps)-1]-tFirst) * 1e-3)
 	return v, k
 }
 
diff --git a/app/vmselect/promql/rollup_test.go b/app/vmselect/promql/rollup_test.go
index f1b9d55c0..8997e361c 100644
--- a/app/vmselect/promql/rollup_test.go
+++ b/app/vmselect/promql/rollup_test.go
@@ -143,10 +143,10 @@ func TestRollupPredictLinear(t *testing.T) {
 		testRollupFunc(t, "predict_linear", args, &me, vExpected)
 	}
 
-	f(0e-3, 63.739757761102624)
-	f(50e-3, 50.39682764539959)
-	f(100e-3, 37.053897529696556)
-	f(200e-3, 10.368037298290488)
+	f(0e-3, 30.382432471845043)
+	f(50e-3, 17.03950235614201)
+	f(100e-3, 3.696572240438975)
+	f(200e-3, -22.989287990967092)
 }
 
 func TestRollupHoltWinters(t *testing.T) {