diff --git a/battery-notify.sh b/battery-notify.sh
index 4d9086b..799c463 100755
--- a/battery-notify.sh
+++ b/battery-notify.sh
@@ -9,11 +9,7 @@ if [[ "$(uname)" = 'Linux' ]]; then
 
     function is_adapted_connected {
         let connected="$(cat /sys/class/power_supply/ADP1/online)"
-        if ((${connected} == 1)); then
-            echo true
-        else
-            echo false
-        fi
+        ((${connected} == 1))
     }
 # Linux ends here
 else
@@ -29,7 +25,7 @@ local did_notify=false
 
 while true; do
     let battery_percent="$(get_battery_percent)"
-    if ((${battery_percent} > 10)) || "$(is_adapted_connected)"; then
+    if ((${battery_percent} > 10)) || is_adapted_connected; then
         did_notify=false
     elif ! ${did_notify}; then
         did_notify=true