diff --git a/flask/templating.py b/flask/templating.py
index 2c17064d..01ae7203 100644
--- a/flask/templating.py
+++ b/flask/templating.py
@@ -69,7 +69,7 @@ class DispatchingJinjaLoader(BaseLoader):
             attempts.append((loader, srcobj, rv))
 
         if explain:
-            from debughelpers import explain_template_loading_attempts
+            from .debughelpers import explain_template_loading_attempts
             explain_template_loading_attempts(self.app, template, attempts)
 
         if tmplrv is not None: