diff --git a/lib-src/etags.c b/lib-src/etags.c
index 03bc55de03d..cbd5fed5e24 100644
--- a/lib-src/etags.c
+++ b/lib-src/etags.c
@@ -5144,10 +5144,10 @@ Rust_entries (FILE *inf)
       cp = skip_spaces(cp);
       name = cp;
 
-      // Skip 'pub' keyworld
+      /* Skip 'pub' keyword.  */
       (void)LOOKING_AT (cp, "pub");
 
-      // Look for define
+      /* Look for define.  */
       if ((is_func = LOOKING_AT (cp, "fn"))
 	  || LOOKING_AT (cp, "enum")
 	  || LOOKING_AT (cp, "struct")