diff --git a/util/lamport/clock_testing.go b/util/lamport/clock_testing.go
index fc59afb2..4bf6d2bf 100644
--- a/util/lamport/clock_testing.go
+++ b/util/lamport/clock_testing.go
@@ -11,7 +11,7 @@ func testClock(t *testing.T, c Clock) {
 
 	val, err := c.Increment()
 	assert.NoError(t, err)
-	assert.Equal(t, Time(1), val)
+	assert.Equal(t, Time(2), val)
 	assert.Equal(t, Time(2), c.Time())
 
 	err = c.Witness(41)
diff --git a/util/lamport/mem_clock.go b/util/lamport/mem_clock.go
index ce6f2d4d..f113b501 100644
--- a/util/lamport/mem_clock.go
+++ b/util/lamport/mem_clock.go
@@ -62,7 +62,7 @@ func (mc *MemClock) Time() Time {
 
 // Increment is used to return the value of the lamport clock and increment it afterwards
 func (mc *MemClock) Increment() (Time, error) {
-	return Time(atomic.AddUint64(&mc.counter, 1) - 1), nil
+	return Time(atomic.AddUint64(&mc.counter, 1)), nil
 }
 
 // Witness is called to update our local clock if necessary after