diff --git a/DShowPlugin/CaptureFilter.cpp b/DShowPlugin/CaptureFilter.cpp
index 27ea880bd..b95591865 100644
--- a/DShowPlugin/CaptureFilter.cpp
+++ b/DShowPlugin/CaptureFilter.cpp
@@ -283,19 +283,19 @@ STDMETHODIMP CaptureFilter::QueryInterface(REFIID riid, void **ppv)
         *ppv = (IUnknown*)this;
         return NOERROR;
     }
-    if(riid == IID_IPersist)
+    else if(riid == IID_IPersist)
     {
         AddRef();
         *ppv = (IPersist*)this;
         return NOERROR;
     }
-    if(riid == IID_IMediaFilter)
+    else if(riid == IID_IMediaFilter)
     {
         AddRef();
         *ppv = (IMediaFilter*)this;
         return NOERROR;
     }
-    if(riid == IID_IBaseFilter)
+    else if(riid == IID_IBaseFilter)
     {
         AddRef();
         *ppv = (IBaseFilter*)this;