diff --git a/tests/LocalDateRangeTest.php b/tests/LocalDateRangeTest.php
index 20ac064..541f1d6 100644
--- a/tests/LocalDateRangeTest.php
+++ b/tests/LocalDateRangeTest.php
@@ -151,17 +151,28 @@ public function providerContains() : array
 
     public function testIterator()
     {
-        $start = LocalDate::of(2013, 12, 30);
-        $end   = LocalDate::of(2014, 1, 2);
+        $start = LocalDate::of(2013, 12, 29);
+        $end   = LocalDate::of(2014, 1, 3);
 
         $range = LocalDateRange::of($start, $end);
 
+        $expected = [
+            '2013-12-29',
+            '2013-12-30',
+            '2013-12-31',
+            '2014-01-01',
+            '2014-01-02',
+            '2014-01-03'
+        ];
+
         for ($i = 0; $i < 2; $i++) { // Test twice to test iterator rewind
-            $expected = $start;
+            $actual = [];
+
             foreach ($range as $date) {
-                $this->assertTrue($date->isEqualTo($expected));
-                $expected = $expected->plusDays(1);
+                $actual[] = (string) $date;
             }
+
+            $this->assertSame($expected, $actual);
         }
     }
 
diff --git a/tests/YearMonthRangeTest.php b/tests/YearMonthRangeTest.php
index 1b57d7d..f546f33 100644
--- a/tests/YearMonthRangeTest.php
+++ b/tests/YearMonthRangeTest.php
@@ -149,12 +149,23 @@ public function testIterator()
 
         $range = YearMonthRange::of($start, $end);
 
+        $expected = [
+            '2013-10',
+            '2013-11',
+            '2013-12',
+            '2014-01',
+            '2014-02',
+            '2014-03'
+        ];
+
         for ($i = 0; $i < 2; $i++) { // Test twice to test iterator rewind
-            $expected = $start;
+            $actual = [];
+
             foreach ($range as $yearMonth) {
-                $this->assertTrue($yearMonth->isEqualTo($expected));
-                $expected = $expected->plusMonths(1);
+                $actual[] = (string) $yearMonth;
             }
+
+            $this->assertSame($expected, $actual);
         }
     }