diff --git a/data/theme/gnome-shell-high-contrast.css b/data/theme/gnome-shell-high-contrast.css
index 94a280cb0..ab7528ea2 100644
--- a/data/theme/gnome-shell-high-contrast.css
+++ b/data/theme/gnome-shell-high-contrast.css
@@ -553,7 +553,9 @@ StScrollBar {
   font-weight: bold;
   height: 1.86em; }
   #panel.unlock-screen, #panel.login-screen, #panel.lock-screen {
-    background-color: transparent; }
+    background-color: transparent;
+    background-gradient-start: transparent;
+    background-gradient-end: transparent; }
   #panel #panelLeft, #panel #panelCenter {
     spacing: 4px; }
   #panel .panel-corner {
@@ -563,7 +565,7 @@ StScrollBar {
     -panel-corner-border-color: transparent; }
     #panel .panel-corner:active, #panel .panel-corner:overview, #panel .panel-corner:focus {
       -panel-corner-border-color: #256ab1; }
-    #panel .panel-corner.lock-screen, #panel .panel-corner.login-screen, #panel .panel-cornerunlock-screen {
+    #panel .panel-corner.lock-screen, #panel .panel-corner.login-screen, #panel .panel-corner.unlock-screen {
       -panel-corner-radius: 0;
       -panel-corner-background-color: transparent;
       -panel-corner-border-color: transparent; }
diff --git a/data/theme/gnome-shell.css b/data/theme/gnome-shell.css
index 7dab09f32..28270b872 100644
--- a/data/theme/gnome-shell.css
+++ b/data/theme/gnome-shell.css
@@ -553,7 +553,9 @@ StScrollBar {
   font-weight: bold;
   height: 1.86em; }
   #panel.unlock-screen, #panel.login-screen, #panel.lock-screen {
-    background-color: transparent; }
+    background-color: transparent;
+    background-gradient-start: transparent;
+    background-gradient-end: transparent; }
   #panel #panelLeft, #panel #panelCenter {
     spacing: 4px; }
   #panel .panel-corner {
@@ -563,7 +565,7 @@ StScrollBar {
     -panel-corner-border-color: transparent; }
     #panel .panel-corner:active, #panel .panel-corner:overview, #panel .panel-corner:focus {
       -panel-corner-border-color: #256ab1; }
-    #panel .panel-corner.lock-screen, #panel .panel-corner.login-screen, #panel .panel-cornerunlock-screen {
+    #panel .panel-corner.lock-screen, #panel .panel-corner.login-screen, #panel .panel-corner.unlock-screen {
       -panel-corner-radius: 0;
       -panel-corner-background-color: transparent;
       -panel-corner-border-color: transparent; }