diff --git a/bugwarrior/services/activecollab3.py b/bugwarrior/services/activecollab3.py
index 69a7555cc..e77f87c81 100644
--- a/bugwarrior/services/activecollab3.py
+++ b/bugwarrior/services/activecollab3.py
@@ -46,7 +46,7 @@ def get_project_slug(self, project_name):
         # string in project slug format: "client-example-project"
         project_name = project_name.lower()
         project_name = re.sub('[\s+]', '-', project_name)
-        project_name = re.sub('[:]', '', project_name)
+        project_name = re.sub('[:,"/"]', '', project_name)
         return project_name
 
     # Return a priority of L, M, or H based on AC's priority index of -2 to 2