diff --git a/src/filter.js b/src/filter.js
index e1c0075..94c1ee8 100644
--- a/src/filter.js
+++ b/src/filter.js
@@ -391,7 +391,7 @@ class MetadataFilter {
 			// trim starting white chars and dash
 			{ source: /^[/,:;~-\s"]+/, target: '' },
 			// trim trailing white chars and dash
-			{ source: /[/,:;~-\s"!]+$/, target: '' },
+			{ source: /[/,:;~-\s"]+$/, target: '' },
 		];
 	}