diff --git a/config_test.go b/config_test.go
index f31e73e..196d4ad 100644
--- a/config_test.go
+++ b/config_test.go
@@ -62,7 +62,7 @@
 			t.Errorf("Got LookupBool error: '%v', expected none\n", err)
 		}
 		if !val {
-			t.Errorf("Got %b from LookupBool, expected 'false'\n", val)
+			t.Errorf("Got %t from LookupBool, expected 'false'\n", val)
 		}
 	},
 	// LookupInt32
diff --git a/object_test.go b/object_test.go
index 1b188a8..cc08210 100644
--- a/object_test.go
+++ b/object_test.go
@@ -108,7 +108,7 @@
 
 func checkShortId(t *testing.T, Id, shortId string) {
 	if len(shortId) < 7 || len(shortId) >= len(Id) {
-		t.Fatal("bad shortId lenght %s", len(shortId))
+		t.Fatalf("bad shortId lenght %d", len(shortId))
 	}
 
 	if !strings.HasPrefix(Id, shortId) {