diff --git a/sdk/include/psdk/propvarutil.h b/sdk/include/psdk/propvarutil.h
index d0aecdb872a..4dc3521a02c 100644
--- a/sdk/include/psdk/propvarutil.h
+++ b/sdk/include/psdk/propvarutil.h
@@ -76,6 +76,7 @@ HRESULT WINAPI PropVariantToInt64(REFPROPVARIANT propvarIn, LONGLONG *ret);
 HRESULT WINAPI PropVariantToUInt16(REFPROPVARIANT propvarIn, USHORT *ret);
 HRESULT WINAPI PropVariantToUInt32(REFPROPVARIANT propvarIn, ULONG *ret);
 HRESULT WINAPI PropVariantToUInt64(REFPROPVARIANT propvarIn, ULONGLONG *ret);
+HRESULT WINAPI PropVariantToBoolean(REFPROPVARIANT propvarIn, BOOL *ret);
 
 HRESULT WINAPI PropVariantToStringAlloc(REFPROPVARIANT propvarIn, WCHAR **ret);