diff --git a/src/Module/Admin/Federation.php b/src/Module/Admin/Federation.php
index f32f0e2ccd..9c52845b93 100644
--- a/src/Module/Admin/Federation.php
+++ b/src/Module/Admin/Federation.php
@@ -87,7 +87,9 @@ class Federation extends BaseAdminModule
 						$part = array_pop($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) && strpos($part, '-')) {
+						$part = array_shift(explode('-', $part));
+					}
 					if (!empty($part)) {
 						if (empty($compacted[$part])) {
 							$compacted[$part] = $versionCounts[$key]['total'];