diff --git a/darkwater/DW640.cpp b/darkwater/DW640.cpp
index 27a0716..2a834e1 100644
--- a/darkwater/DW640.cpp
+++ b/darkwater/DW640.cpp
@@ -50,5 +50,5 @@ void DW640::initialize() {
  * @return True if connection is valid, false otherwise
  */
 bool DW640::testConnection() {
-    return this->pwm->testConnection();
+    return this->pwm.testConnection();
 }
\ No newline at end of file
diff --git a/darkwater/DW640.h b/darkwater/DW640.h
index c6da8f5..02f30ba 100644
--- a/darkwater/DW640.h
+++ b/darkwater/DW640.h
@@ -100,7 +100,7 @@ class DW640 {
         uint8_t devAddr;
         float frequency;
         uint8_t mode;
-        PCA9685 pwm;
+        PCA9685* pwm;
 };
 
 #endif // DW640_H
\ No newline at end of file