diff --git a/internal/internal_test.go b/internal/internal_test.go
index 16d576e..f86daf4 100644
--- a/internal/internal_test.go
+++ b/internal/internal_test.go
@@ -36,7 +36,7 @@ func TestSub(t *testing.T) {
 	}{
 		{A: 1, B: 0, Expected: 1},
 		{A: 1, B: 1, Expected: 0},
-		{A: 0, B: -5, Expected: -5},
+		{A: 0, B: 5, Expected: -5},
 	}
 
 	for _, test := range tc {