diff --git a/adminer/static/functions.js b/adminer/static/functions.js
index ee080d80..6681964a 100644
--- a/adminer/static/functions.js
+++ b/adminer/static/functions.js
@@ -152,8 +152,9 @@ function checkboxClick(event, el) {
 				}
 			}
 		}
+	} else {
+		lastChecked = el;
 	}
-	lastChecked = el;
 }
 
 /** Set HTML code of an element