diff --git a/caps/tests/mochitest/mochitest.toml b/caps/tests/mochitest/mochitest.toml
index a545dc9620f2..c9e72c305b11 100644
--- a/caps/tests/mochitest/mochitest.toml
+++ b/caps/tests/mochitest/mochitest.toml
@@ -24,4 +24,3 @@ skip-if = [
 ]
 
 ["test_disallowInheritPrincipal.html"]
-
diff --git a/dom/battery/test/mochitest.toml b/dom/battery/test/mochitest.toml
index 2a56a6a38689..86f6921b3084 100644
--- a/dom/battery/test/mochitest.toml
+++ b/dom/battery/test/mochitest.toml
@@ -1,4 +1,3 @@
 [DEFAULT]
 
 ["test_battery_unprivileged.html"]
-
diff --git a/dom/encoding/test/mochitest.toml b/dom/encoding/test/mochitest.toml
index 41a240752879..9437edd818de 100644
--- a/dom/encoding/test/mochitest.toml
+++ b/dom/encoding/test/mochitest.toml
@@ -43,4 +43,3 @@ skip-if = [
 ["test_submit_euckr.html"]
 
 ["test_utf16_files.html"]
-
diff --git a/dom/fetch/tests/mochitest.toml b/dom/fetch/tests/mochitest.toml
index 9fd4b8c01338..a6031877b966 100644
--- a/dom/fetch/tests/mochitest.toml
+++ b/dom/fetch/tests/mochitest.toml
@@ -3,4 +3,3 @@
 ["test_ext_response_constructor.html"]
 
 ["test_invalid_header_exception.html"]
-
diff --git a/dom/l10n/tests/mochitest/mochitest.toml b/dom/l10n/tests/mochitest/mochitest.toml
index c94367f66b6f..e90215b28d21 100644
--- a/dom/l10n/tests/mochitest/mochitest.toml
+++ b/dom/l10n/tests/mochitest/mochitest.toml
@@ -1,4 +1,3 @@
 [DEFAULT]
 
 ["document_l10n/test_unpriv_iframe.html"]
-
diff --git a/dom/locks/test/mochitest.toml b/dom/locks/test/mochitest.toml
index 2c565cdb0264..f0dc745c0aca 100644
--- a/dom/locks/test/mochitest.toml
+++ b/dom/locks/test/mochitest.toml
@@ -3,4 +3,3 @@ scheme = "https"
 
 ["test_strongworker.html"]
 support-files = ["file_strongworker.js"]
-