diff --git a/res/themes/light-high-contrast/css/_light-high-contrast.scss b/res/themes/light-high-contrast/css/_light-high-contrast.scss
index a664544cff6..6e9394f5485 100644
--- a/res/themes/light-high-contrast/css/_light-high-contrast.scss
+++ b/res/themes/light-high-contrast/css/_light-high-contrast.scss
@@ -105,3 +105,23 @@ $roomtopic-color: $secondary-content;
 .mx_ThemeChoicePanel > .mx_ThemeSelectors > .mx_StyledRadioButton.mx_StyledRadioButton_disabled {
     color: $primary-content;
 }
+
+.mx_RoomSearch {
+    &.mx_RoomSearch_focused, &.mx_RoomSearch_hasQuery {
+        .mx_RoomSearch_clearButton {
+            &::before {
+                background-color: $background !important;
+            }
+        }
+    }
+}
+
+.mx_PollCreateDialog {
+    .mx_PollCreateDialog_option {
+        .mx_PollCreateDialog_removeOption {
+            &::before {
+                background-color: $background !important;
+            }
+        }
+    }
+}