diff --git a/Motor.cpp b/Motor.cpp
index 8151321..ea6b55d 100644
--- a/Motor.cpp
+++ b/Motor.cpp
@@ -18,7 +18,7 @@ void Motor::SetSpeed(float targetSpeed) {
 bool Motor::Drive(float distance) {
   if (!this->driving) {
     this->startTime = time(NULL);
-    this->targetDistance = abs(distance);
+    this->targetDistance = distance >= 0 ? distance : -distance;
     this->driving = true;
   }
   double duration = difftime(time(NULL), this->startTime);