diff --git a/package/grep/grep.mk b/package/grep/grep.mk
index 06d84ed5b9..6e44a189f0 100644
--- a/package/grep/grep.mk
+++ b/package/grep/grep.mk
@@ -9,7 +9,6 @@ GREP_SITE = $(BR2_GNU_MIRROR)/grep
 GREP_SOURCE = grep-$(GREP_VERSION).tar.xz
 GREP_LICENSE = GPL-3.0+
 GREP_LICENSE_FILES = COPYING
-GREP_CONF_OPTS = $(if $(BR2_TOOLCHAIN_USES_MUSL),--with-included-regex)
 GREP_DEPENDENCIES = $(TARGET_NLS_DEPENDENCIES)
 
 # link with iconv if enabled