diff --git a/app/Jobs/NodelistImport.php b/app/Jobs/NodelistImport.php
index 0ab07d5..d08b0a0 100644
--- a/app/Jobs/NodelistImport.php
+++ b/app/Jobs/NodelistImport.php
@@ -444,9 +444,16 @@ class NodelistImport implements ShouldQueue
 			$so->baud = $fields[6];
 			*/
 
-			if ($so->users->count() && $so->getDirty()) {
-				Log::alert(sprintf('%s:! Refusing to update a system managed by a user',self::LOGKEY),['dirty'=>$so->getDirty()]);
-				continue;
+			if ($so->getDirty()) {
+				if ($so->users->count()) {
+					Log::alert(sprintf('%s:! Refusing to update a system managed by a user',self::LOGKEY),['dirty'=>$so->getDirty()]);
+					continue;
+				}
+
+				if ($so->sessions()->count()) {
+					Log::alert(sprintf('%s:! Refusing to update a system configured here',self::LOGKEY),['dirty'=>$so->getDirty()]);
+					continue;
+				}
 			}
 
 			// Save the system record