diff --git a/client_test.go b/client_test.go
index 7e769381b..613d37659 100644
--- a/client_test.go
+++ b/client_test.go
@@ -90,7 +90,7 @@ func TestClient_MultiNode(t *testing.T) {
 			}
 		}
 		if !ownsNum {
-			t.Fatalf("Trying to use slice %d on host %s, but it doesn't own that slice. It owns %s", num, s[i].Host(), owns)
+			t.Fatalf("Trying to use slice %d on host %s, but it doesn't own that slice. It owns %v", num, s[i].Host(), owns)
 		}
 	}
 
diff --git a/executor_test.go b/executor_test.go
index bf7550b25..4eb81e492 100644
--- a/executor_test.go
+++ b/executor_test.go
@@ -305,7 +305,7 @@ func TestExecutor_Execute_SetFieldValue(t *testing.T) {
 		} else if !exists {
 			t.Fatal("expected value to exist")
 		} else if value != 25 {
-			t.Fatal("unexpected value: %v", value)
+			t.Fatalf("unexpected value: %v", value)
 		}
 
 		if value, exists, err := f.FieldValue(10, "field1"); err != nil {
@@ -313,7 +313,7 @@ func TestExecutor_Execute_SetFieldValue(t *testing.T) {
 		} else if !exists {
 			t.Fatal("expected value to exist")
 		} else if value != 2 {
-			t.Fatal("unexpected value: %v", value)
+			t.Fatalf("unexpected value: %v", value)
 		}
 
 		if value, exists, err := f.FieldValue(100, "field0"); err != nil {
@@ -321,7 +321,7 @@ func TestExecutor_Execute_SetFieldValue(t *testing.T) {
 		} else if !exists {
 			t.Fatal("expected value to exist")
 		} else if value != 10 {
-			t.Fatal("unexpected value: %v", value)
+			t.Fatalf("unexpected value: %v", value)
 		}
 	})
 
@@ -781,7 +781,7 @@ func TestExecutor_Execute_FieldRange(t *testing.T) {
 			t.Fatal(err)
 		} else if !reflect.DeepEqual([]uint64{0}, result[0].(*pilosa.Bitmap).Bits()) {
 			//t.Fatalf("unexpected result: %s", spew.Sdump(result))
-			t.Fatalf("unexpected result: %s", result[0].(*pilosa.Bitmap).Bits())
+			t.Fatalf("unexpected result: %v", result[0].(*pilosa.Bitmap).Bits())
 		}
 	})
 
diff --git a/uri.go b/uri.go
index ee5d23d75..21028fe44 100644
--- a/uri.go
+++ b/uri.go
@@ -134,6 +134,11 @@ func (u *URI) Normalize() string {
 	return fmt.Sprintf("%s://%s:%d", scheme, u.host, u.port)
 }
 
+// String returns the address as a string.
+func (u URI) String() string {
+	return fmt.Sprintf("%s://%s:%d", u.scheme, u.host, u.port)
+}
+
 // Equals returns true if the checked URI is equivalent to this URI.
 func (u URI) Equals(other *URI) bool {
 	if other == nil {