diff --git a/_pytest/mark.py b/_pytest/mark.py
index 59c72607e..22a6729e6 100644
--- a/_pytest/mark.py
+++ b/_pytest/mark.py
@@ -139,8 +139,9 @@ def matchkeyword(colitem, keywordexpr):
         mapped_names.add(name)
 
     # Add the names attached to the current function through direct assignment
-    for name in colitem.function.__dict__:
-        mapped_names.add(name)
+    if hasattr(colitem, 'function'):
+        for name in colitem.function.__dict__:
+            mapped_names.add(name)
 
     return eval(keywordexpr, {}, KeywordMapping(mapped_names))