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-rw-r--r--sphinx/ext/coverage.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/sphinx/ext/coverage.py b/sphinx/ext/coverage.py
index 98681466c..11e017f69 100644
--- a/sphinx/ext/coverage.py
+++ b/sphinx/ext/coverage.py
@@ -105,7 +105,7 @@ class CoverageBuilder(Builder):
if match:
name = match.groups()[0]
if name not in c_objects:
- for exp in self.c_ignorexps.get(key, ()):
+ for exp in self.c_ignorexps.get(key, []):
if exp.match(name):
break
else: