diff --git a/rdmd.d b/rdmd.d
index fb5a3ce2d8..cbfe91ca05 100644
--- a/rdmd.d
+++ b/rdmd.d
@@ -90,7 +90,7 @@ int main(string[] args)
         version(Windows)
         {
             // invoke browser that is associated with the http protocol
-            ShellExecuteA(null, "open", page, null, null, SW_SHOWNORMAL);
+            ShellExecuteA(null, "open", page.toStringz, null, null, SW_SHOWNORMAL);
         }
         else
         {