diff --git a/pelican/utils.py b/pelican/utils.py
index 3a41d04e..40406b1a 100644
--- a/pelican/utils.py
+++ b/pelican/utils.py
@@ -416,5 +416,5 @@ def mkdir_p(path):
     try:
         os.makedirs(path)
     except OSError as e:
-        if e.errno != errno.EEXIST:
+        if e.errno != errno.EEXIST or not os.path.isdir(path):
             raise