diff --git a/pkg/morph/timer/block_test.go b/pkg/morph/timer/block_test.go
index 615631dcb..a144b3db6 100644
--- a/pkg/morph/timer/block_test.go
+++ b/pkg/morph/timer/block_test.go
@@ -18,7 +18,7 @@ func tickN(t *timer.BlockTimer, n uint32) {
 // "resetting" consists of ticking the current height as well and invoking `Reset`.
 func TestIRBlockTimer_Reset(t *testing.T) {
 	var baseCounter [2]int
-	blockDur := uint32(3)
+	const blockDur = uint32(3)
 
 	bt1 := timer.NewBlockTimer(
 		func() (uint32, error) { return blockDur, nil },
@@ -82,7 +82,7 @@ func TestBlockTimer_ResetChangeDuration(t *testing.T) {
 }
 
 func TestBlockTimer(t *testing.T) {
-	blockDur := uint32(10)
+	const blockDur = uint32(10)
 	baseCallCounter := uint32(0)
 
 	bt := timer.NewBlockTimer(timer.StaticBlockMeter(blockDur), func() {