diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index cfa7d37fc155cd86ab37cffeed1e5da71ad574e9..f2af6708fdb9152f841959f328242eba3e84245f 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,8 @@
 Unreleased changes
 ------------------
 
+* Reversed the colours of the DOM activity map
+
 Version 2
 ---------
 2.1.6 / 2021-12-01
diff --git a/backend/scripts/dom_activity.py b/backend/scripts/dom_activity.py
index e476c3d87018ea08108f8c31554b6480e34e6bf1..04f81dc95a5cae2e39c3f4670bac4400f85e8f3d 100755
--- a/backend/scripts/dom_activity.py
+++ b/backend/scripts/dom_activity.py
@@ -95,7 +95,7 @@ class DOMActivityPlotter(kp.Module):
                 self.detector.det_id),
             vmin=0.0,
             vmax=15 * 60,
-            cmap="cividis")
+            cmap="cividis_r")
 
 
 def main():