diff --git a/website/contrib/code_block/healthchecks.py b/website/contrib/code_block/healthchecks.py
index d690e2a..f157756 100644
--- a/website/contrib/code_block/healthchecks.py
+++ b/website/contrib/code_block/healthchecks.py
@@ -9,6 +9,7 @@ class GitHubLinguistHealthCheckBackend(BaseHealthCheckBackend):
             colours = _get_linguist_colours()
         except Exception as e:
             self.add_error(str(e))
+            return
 
         if colours is None:
             self.add_error("No colours provided")