diff --git a/officeparser.py b/officeparser.py
index 7a4ce7a..c3fe4e3 100755
--- a/officeparser.py
+++ b/officeparser.py
@@ -281,7 +281,7 @@ def get_stream(self, index):
 
     def find_stream_by_name(self, name):
         for d in self.directory:
-            if d.name == name:
+            if d.name == name and d._mse == STGTY_STREAM:
                 return d
         return None