diff --git a/cfg.mk b/cfg.mk
index 5321a52b7e..ea10ca19f5 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -1038,7 +1038,7 @@ sc_prohibit_http_urls:
 	  $(_sc_search_regexp)
 
 sc_prohibit_backslash_alignment:
-	@prohibit='[[:blank:]][[:blank:]]\\$$' \
+	@prohibit='([[:blank:]][[:blank:]]|	)\\$$' \
 	in_vc_files='*\.([chx]|am|mk)$$' \
 	halt='Do not attempt to right-align backslashes' \
 	  $(_sc_search_regexp)