diff --git a/src/supported.c b/src/supported.c
index 5ca84f6..600b478 100644
--- a/src/supported.c
+++ b/src/supported.c
@@ -256,7 +256,7 @@ isupport_prefix(const void *ptr)
                 ConfigChannel.use_admin ? "a" : "",
                 ConfigChannel.use_halfop ? "h" : "",
                 ConfigChannel.use_owner ? "~" : "",
-                ConfigChannel.use_admin ? "!" : "",
+                ConfigChannel.use_admin ? "&" : "",
                 ConfigChannel.use_halfop ? "%" : "");
     return result;
 }