diff --git a/assets/less/content.less b/assets/less/content.less
index 969a6b234..28cc25985 100644
--- a/assets/less/content.less
+++ b/assets/less/content.less
@@ -13,3 +13,7 @@
   @import './content/footer';
   @import './content/bottom-actions.less';
 }
+
+body:not(.night-mode) .content-inner img[src*="#gh-dark-mode-only"] {
+  display: none;
+}
diff --git a/assets/less/epub.less b/assets/less/epub.less
index 63c7ccef1..48368a4c5 100644
--- a/assets/less/epub.less
+++ b/assets/less/epub.less
@@ -17,6 +17,10 @@ nav > ol {
   }
 }
 
+img[src*="#gh-dark-mode-only"] {
+  display: none;
+}
+
 .title-container {
   text-align: center;
 }
diff --git a/assets/less/night/content/general.less b/assets/less/night/content/general.less
index b1cd83590..589c77ea5 100644
--- a/assets/less/night/content/general.less
+++ b/assets/less/night/content/general.less
@@ -33,3 +33,7 @@ a.view-source {
 .summary h2 a {
   text-decoration: none;
 }
+
+img[src*="#gh-light-mode-only"] {
+  display: none;
+}