diff --git a/d2common/d2cache/cache_test.go b/d2common/d2cache/cache_test.go
index ad306f74..3cf1d159 100644
--- a/d2common/d2cache/cache_test.go
+++ b/d2common/d2cache/cache_test.go
@@ -16,8 +16,8 @@ func TestCacheInsert(t *testing.T) {
 func TestCacheInsertWithinBudget(t *testing.T) {
 	cache := CreateCache(1)
 	insertError := cache.Insert("A", "", 2)
-	if insertError == nil {
-		t.Fatalf("Cache insert of node weight larger than budget did not result in error")
+	if insertError != nil {
+		t.Fatalf("Cache insert resulted in unexpected error: %s", insertError)
 	}
 }