diff --git a/darkwater/DW640.cpp b/darkwater/DW640.cpp
index 00e9504..7d442d3 100644
--- a/darkwater/DW640.cpp
+++ b/darkwater/DW640.cpp
@@ -44,6 +44,7 @@ DW640::DW640(uint8_t address) {
  */
 bool DW640::initialize() {
     this->pwm = new PCA9685( this->devAddr );
+    this->pwm->initialize();
     if (!testConnection() ) {
     	printf("No 640 board found\n");
     	return 0;