diff --git a/tests/functional/openlp_core_lib/test_lib.py b/tests/functional/openlp_core_lib/test_lib.py
index 44ca08394..7c5ee4699 100644
--- a/tests/functional/openlp_core_lib/test_lib.py
+++ b/tests/functional/openlp_core_lib/test_lib.py
@@ -230,7 +230,7 @@ class TestLib(TestCase):
             # GIVEN: A set of mocked-out Qt classes
             mocked_byte_array = MagicMock()
             MockedQtCore.QByteArray.return_value = mocked_byte_array
-            mocked_byte_array.toBase64.return_value = QtCore.QByteArray('base64mock')
+            mocked_byte_array.toBase64.return_value = QtCore.QByteArray(b'base64mock')
             mocked_buffer = MagicMock()
             MockedQtCore.QBuffer.return_value = mocked_buffer
             MockedQtCore.QIODevice.WriteOnly = 'writeonly'
diff --git a/tests/functional/openlp_core_lib/test_renderer.py b/tests/functional/openlp_core_lib/test_renderer.py
index fd3c17054..4b0ab41f6 100644
--- a/tests/functional/openlp_core_lib/test_renderer.py
+++ b/tests/functional/openlp_core_lib/test_renderer.py
@@ -109,7 +109,7 @@ class TestRenderer(TestCase):
         """
         # GIVEN: A line of with a space text and the logical split
         renderer = Renderer()
-        renderer.empty_height = 25
+        renderer.empty_height = 480
         given_line = 'a\n[---]\nb'
         expected_words = ['a<br>[---]<br>b']
         service_item = ServiceItem(None)
@@ -126,7 +126,7 @@ class TestRenderer(TestCase):
         """
         # GIVEN: A line of with a space before the logical split
         renderer = Renderer()
-        renderer.empty_height = 25
+        renderer.empty_height = 480
         given_line = '\n       [---]\n'
         expected_words = ['<br>       [---]']
         service_item = ServiceItem(None)
@@ -143,7 +143,7 @@ class TestRenderer(TestCase):
         """
         # GIVEN: A line of with a space after the logical split
         renderer = Renderer()
-        renderer.empty_height = 25
+        renderer.empty_height = 480
         given_line = '\n[---]  \n'
         expected_words = ['<br>[---]  ']
         service_item = ServiceItem(None)