diff --git a/media/inf/syssetup.inf b/media/inf/syssetup.inf
index 41a0b782c70..2a5375352bb 100644
--- a/media/inf/syssetup.inf
+++ b/media/inf/syssetup.inf
@@ -126,6 +126,7 @@ AddReg=Classes
 11,,zipfldr.dll,1
 
 [TypeLibraries]
+riched20.dll
 stdole2.tlb
 stdole32.tlb
 mshtml.tlb