diff --git a/plugin_ppt.py b/plugin_ppt.py
index c71528c..0b47e72 100644
--- a/plugin_ppt.py
+++ b/plugin_ppt.py
@@ -323,7 +323,7 @@ def Analyze(self):
             0xF145: 'RT_TimeSubEffectContainer'
         }
 
-        if self.streamname == ['PowerPoint Document']:
+        if self.streamname[-1] == 'PowerPoint Document':
             self.ran = True
             stream = self.stream