diff --git a/Codist/Taggers/TaggerFactories.cs b/Codist/Taggers/TaggerFactories.cs
index 9efd6229..00495c99 100644
--- a/Codist/Taggers/TaggerFactories.cs
+++ b/Codist/Taggers/TaggerFactories.cs
@@ -114,6 +114,7 @@ ITagger<IClassificationTag> GetTagger(ITextView textView, ITextBuffer buffer) {
 
 			if (_Taggers.TryGetValue(textView, out var bufferTaggers)) {
 				if (bufferTaggers.TryGetValue(buffer, out var tagger)) {
+					tagger.Ref();
 					return tagger;
 				}
 				bufferTaggers.Add(_LastTextBuffer = buffer, _LastTagger = CreateTagger());