diff --git a/root/etc/s6-overlay/s6-rc.d/init-wireguard-module/run b/root/etc/s6-overlay/s6-rc.d/init-wireguard-module/run
index 99eb6e8..d6ed375 100755
--- a/root/etc/s6-overlay/s6-rc.d/init-wireguard-module/run
+++ b/root/etc/s6-overlay/s6-rc.d/init-wireguard-module/run
@@ -9,7 +9,7 @@ if ip link add dev test type wireguard; then
   echo "**** It seems the wireguard module is already active. Skipping kernel header install and module compilation. ****"
   SKIP_COMPILE="true"
   ip link del dev test
-    if capsh --print | grep "Current:" | grep "cap_sys_module"; then
+    if capsh --print | grep "Current:" | grep -q "cap_sys_module"; then
       echo "**** As the wireguard module is already active you can remove the SYS_MODULE capability from your container run/compose. ****"
     fi
 else