diff --git a/plugins/sudoers/Makefile.in b/plugins/sudoers/Makefile.in
index c687e33dd..d2728abc1 100644
--- a/plugins/sudoers/Makefile.in
+++ b/plugins/sudoers/Makefile.in
@@ -356,7 +356,7 @@ $(devdir)/toke.c: $(srcdir)/toke.l prologue
 	    else \
 		toke_l="$(srcdir)/toke.l"; \
 	    fi; \
-	    cmd='$(FLEX) '"$$toke_l"'; cp prologue $(devdir)/toke.c; $(SED) "s/^\\(#line .*\\) \"lex\\.sudoers\\.c\"/\1 \"toke.c\"/" lex.sudoers.c >> $(devdir)/toke.c; rm -f lex.sudoers.c'; \
+	    cmd='$(FLEX) '"$$toke_l"'; cp prologue $(devdir)/toke.c; $(SED) -e "s/^\\(#line .*\\) \"lex\\.sudoers\\.c\"/\1 \"toke.c\"/" -e "s:/\* *FALLTHROUGH *\*/:FALLTHROUGH;:" lex.sudoers.c >> $(devdir)/toke.c; rm -f lex.sudoers.c'; \
 	    echo "$$cmd"; eval $$cmd; \
 	fi
 
diff --git a/plugins/sudoers/toke.c b/plugins/sudoers/toke.c
index da50eb3b8..9fa8464bf 100644
--- a/plugins/sudoers/toke.c
+++ b/plugins/sudoers/toke.c
@@ -3803,7 +3803,7 @@ static int yy_get_next_buffer (void)
 					/* Reset buffer status. */
 					sudoersrestart(sudoersin );
 
-					/*FALLTHROUGH*/
+					FALLTHROUGH;
 
 				case EOB_ACT_END_OF_FILE:
 					{