diff --git a/src/vim9class.c b/src/vim9class.c
index 22db751..7c7700b 100644
--- a/src/vim9class.c
+++ b/src/vim9class.c
@@ -1623,6 +1623,8 @@
 	}
     }
 
+    p = skipwhite(p);
+
     if (*p != NUL && *p != '#')
     {
 	if (did_emsg == did_emsg_before)