diff --git a/common/Make.rules b/common/Make.rules
index 3be487ec8..148f80e8c 100644
--- a/common/Make.rules
+++ b/common/Make.rules
@@ -82,7 +82,7 @@ pod_clean:
 # =====================
 
 # emits defined capabilities in a simple list, e.g. "CAP_NAME CAP_NAME2"
-CAPABILITIES=$(shell echo "\#include <linux/capability.h>" | cpp -dM | LC_ALL=C sed -n -e '/CAP_EMPTY_SET/d' -e 's/^\#define[ \t]\+CAP_\([A-Z0-9_]\+\)[ \t]\+\([0-9xa-f]\+\)\(.*\)$$/CAP_\1/p' | sort)
+CAPABILITIES=$(shell echo "\#include <linux/capability.h>" | cpp -dM | LC_ALL=C sed -n -e '/CAP_EMPTY_SET/d' -e 's/^\#define[ \t]\+CAP_\([A-Z0-9_]\+\)[ \t]\+\([0-9xa-f]\+\)\(.*\)$$/CAP_\1/p' | LC_ALL=C sort)
 
 .PHONY: list_capabilities
 list_capabilities: /usr/include/linux/capability.h