diff --git a/Tst/codeblockreusefeature/codeblockreuse.py b/Tst/codeblockreusefeature/codeblockreuse.py
index 3f81839eee16f8dc397539e62ddbf311f46989ee..95da74d80a5ea042a52f6345d8532dc6e22db2e5 100755
--- a/Tst/codeblockreusefeature/codeblockreuse.py
+++ b/Tst/codeblockreusefeature/codeblockreuse.py
@@ -594,8 +594,8 @@ class CBRSearch(Gtk.Box):
         return self._filter_searchstring
 
     @filter_searchstring.setter
-    def filter_searchstring(self, value: bool):
-        assert isinstance(value, bool)
+    def filter_searchstring(self, value: str):
+        assert isinstance(value, str)
         self._filter_searchstring = value
 
     # @property