diff --git a/test.sh b/test.sh
index 88c9490..21b8afd 100755
--- a/test.sh
+++ b/test.sh
@@ -1,4 +1,4 @@
 #!/bin/sh
 LIBEXECDIR=. make &&
-sudo setcap CAP_NET_RAW=ep ethermess-backend &&
+test -n "$(getcap ethermess-backend)" || sudo setcap CAP_NET_RAW=ep ethermess-backend &&
 ./ethermess "$@"