diff --git a/CHANGES.md b/CHANGES.md
index e4682292..2ade705d 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -13,6 +13,7 @@ Other changes:
 Bugfix:
  - Fix regression on permalink click
  - Fix crash reported by the PlayStore (#341)
+ - Fix Chat composer separator color in dark/black theme
 
 Translations:
  -
diff --git a/vector/src/main/res/values/theme_black.xml b/vector/src/main/res/values/theme_black.xml
index 0b2d2135..d2b12e78 100644
--- a/vector/src/main/res/values/theme_black.xml
+++ b/vector/src/main/res/values/theme_black.xml
@@ -78,7 +78,7 @@
         <!-- activities background -->
         <item name="android:windowBackground">@color/riot_primary_background_color_black</item>
         <item name="vctr_bottom_nav_background_color">@color/primary_color_black</item>
-        <item name="vctr_bottom_nav_background_border_color">#FFE9EDF1</item>
+        <item name="vctr_bottom_nav_background_border_color">#FF15171b</item>
 
         <item name="vctr_direct_chat_circle">@drawable/direct_chat_circle_black</item>
     </style>
diff --git a/vector/src/main/res/values/theme_dark.xml b/vector/src/main/res/values/theme_dark.xml
index 826ab5f1..11184539 100644
--- a/vector/src/main/res/values/theme_dark.xml
+++ b/vector/src/main/res/values/theme_dark.xml
@@ -65,7 +65,7 @@
 
         <!-- default background color -->
         <item name="vctr_bottom_nav_background_color">@color/primary_color_dark</item>
-        <item name="vctr_bottom_nav_background_border_color">#FFE9EDF1</item>
+        <item name="vctr_bottom_nav_background_border_color">#FF15171b</item>
 
         <!-- waiting view background -->
         <item name="vctr_waiting_background_color">#55555555</item>