diff --git a/wpilibc/src/main/native/cpp/Drive/Vector2d.cpp b/wpilibc/src/main/native/cpp/Drive/Vector2d.cpp
index d2ebe3dac7..1c0c3c38a1 100644
--- a/wpilibc/src/main/native/cpp/Drive/Vector2d.cpp
+++ b/wpilibc/src/main/native/cpp/Drive/Vector2d.cpp
@@ -21,7 +21,7 @@ Vector2d::Vector2d(double x, double y) {
 /**
  * Rotate a vector in Cartesian space.
  *
- * @param angle angle by which to rotate vector counter-clockwise.
+ * @param angle angle in degrees by which to rotate vector counter-clockwise.
  */
 void Vector2d::Rotate(double angle) {
   double cosA = std::cos(angle * (kPi / 180.0));
diff --git a/wpilibj/src/main/java/edu/wpi/first/wpilibj/drive/Vector2d.java b/wpilibj/src/main/java/edu/wpi/first/wpilibj/drive/Vector2d.java
index 791cd35683..ed27e0bc6e 100644
--- a/wpilibj/src/main/java/edu/wpi/first/wpilibj/drive/Vector2d.java
+++ b/wpilibj/src/main/java/edu/wpi/first/wpilibj/drive/Vector2d.java
@@ -26,7 +26,7 @@ public class Vector2d {
   /**
    * Rotate a vector in Cartesian space.
    *
-   * @param angle angle by which to rotate vector counter-clockwise.
+   * @param angle angle in degrees by which to rotate vector counter-clockwise.
    */
   public void rotate(double angle) {
     double cosA = Math.cos(angle * (Math.PI / 180.0));