diff --git a/mod/admin.php b/mod/admin.php
index 7f8e12e0c7..5fc53427c4 100644
--- a/mod/admin.php
+++ b/mod/admin.php
@@ -680,6 +680,8 @@ function admin_page_federation(App $a)
 				do {
 					$part = array_pop($parts);
 				} while (!empty($parts) && ((strlen($part) >= 40) || (strlen($part) <= 3)));
+				// only take the x.x.x part of the version, not the "release" after the dash
+				$part = array_shift(explode('-', $part));
 
 				if (!empty($part)) {
 					if (empty($compacted[$part])) {