diff --git a/src/Adapters/RPiAdapter.php b/src/Adapters/RPiAdapter.php
index fa6144f..1d1b817 100644
--- a/src/Adapters/RPiAdapter.php
+++ b/src/Adapters/RPiAdapter.php
@@ -39,7 +39,7 @@ public function setDirection(int $pin, string $direction, bool $invert = false):
 
         if ($invert) {
             $inverted = intval($invert);
-            if (file_get_contents("/sys/class/gpio/gpio{$pin}/active_low") !== $inverted) {
+            if (file_get_contents("/sys/class/gpio/gpio{$pin}/active_low") != $inverted) {
                 system("echo {$inverted} > /sys/class/gpio/gpio{$pin}/active_low");
             }
         }