diff --git a/tests/Carbon/DiffTest.php b/tests/Carbon/DiffTest.php
index ebe4e574e7..4c68171a16 100644
--- a/tests/Carbon/DiffTest.php
+++ b/tests/Carbon/DiffTest.php
@@ -16,9 +16,9 @@
 use Carbon\Carbon;
 use Carbon\CarbonInterface;
 use Carbon\CarbonInterval;
+use Carbon\Exceptions\InvalidFormatException;
 use Closure;
 use DateTime;
-use Exception;
 use InvalidArgumentException;
 use Tests\AbstractTestCase;
 
@@ -1577,7 +1577,7 @@ public function testDiffWithInvalidObject()
 
     public function testDiffForHumansWithIncorrectDateTimeStringWhichIsNotACarbonInstance()
     {
-        $this->expectExceptionObject(new Exception(
+        $this->expectExceptionObject(new InvalidFormatException(
             'Failed to parse time string (2018-04-13-08:00:00) at position 16'
         ));
 
diff --git a/tests/CarbonImmutable/DiffTest.php b/tests/CarbonImmutable/DiffTest.php
index 2629509307..a50086eb35 100644
--- a/tests/CarbonImmutable/DiffTest.php
+++ b/tests/CarbonImmutable/DiffTest.php
@@ -16,9 +16,9 @@
 use Carbon\CarbonImmutable as Carbon;
 use Carbon\CarbonInterface;
 use Carbon\CarbonInterval;
+use Carbon\Exceptions\InvalidFormatException;
 use Closure;
 use DateTime;
-use Exception;
 use InvalidArgumentException;
 use Tests\AbstractTestCase;
 
@@ -1532,10 +1532,9 @@ public function testDiffWithInvalidObject()
 
     public function testDiffForHumansWithIncorrectDateTimeStringWhichIsNotACarbonInstance()
     {
-        $this->expectException(Exception::class);
-        $this->expectExceptionMessage(
+        $this->expectExceptionObject(new InvalidFormatException(
             'Failed to parse time string (2018-04-13-08:00:00) at position 16'
-        );
+        ));
 
         $mar13 = Carbon::parse('2018-03-13');
         $mar13->diffForHumans('2018-04-13-08:00:00');
diff --git a/tests/CarbonInterval/CreateFromFormatTest.php b/tests/CarbonInterval/CreateFromFormatTest.php
index 60eacf87ad..b8d717251d 100644
--- a/tests/CarbonInterval/CreateFromFormatTest.php
+++ b/tests/CarbonInterval/CreateFromFormatTest.php
@@ -57,6 +57,7 @@ public function testInvalidSubstitute()
             "Allowed substitutes for interval formats are y, Y, o, m, n, W, d, j, z, h, g, H, G, i, s, u, v\n".
             'See https://php.net/manual/en/function.date.php for their meaning'
         );
+        $this->expectExceptionCode(0);
 
         CarbonInterval::createFromFormat('N', '4');
     }