diff --git a/src/main/kotlin/mdnet/base/server/ImageServer.kt b/src/main/kotlin/mdnet/base/server/ImageServer.kt
index 06520fa..aebc2aa 100644
--- a/src/main/kotlin/mdnet/base/server/ImageServer.kt
+++ b/src/main/kotlin/mdnet/base/server/ImageServer.kt
@@ -164,6 +164,7 @@ class ImageServer(
         return allowedDomains.any {
             referer.substringAfter("//") // Ignore scheme
                     .substringBefore("/") // Ignore path
+                    .substringBefore(":")
                     .endsWith(it)
         }
     }