diff --git a/wpilibc/src/main/native/cpp/Drive/MecanumDrive.cpp b/wpilibc/src/main/native/cpp/Drive/MecanumDrive.cpp
index 71b896f0ac..959a424754 100644
--- a/wpilibc/src/main/native/cpp/Drive/MecanumDrive.cpp
+++ b/wpilibc/src/main/native/cpp/Drive/MecanumDrive.cpp
@@ -134,12 +134,12 @@ void MecanumDrive::InitSendable(SendableBuilder& builder) {
                             [=]() { return m_frontLeftMotor.Get(); },
                             [=](double value) { m_frontLeftMotor.Set(value); });
   builder.AddDoubleProperty(
-      "Front Right Motor Speed", [=]() { return m_frontRightMotor.Get(); },
-      [=](double value) { m_frontRightMotor.Set(value); });
+      "Front Right Motor Speed", [=]() { return -m_frontRightMotor.Get(); },
+      [=](double value) { m_frontRightMotor.Set(-value); });
   builder.AddDoubleProperty("Rear Left Motor Speed",
                             [=]() { return m_rearLeftMotor.Get(); },
                             [=](double value) { m_rearLeftMotor.Set(value); });
-  builder.AddDoubleProperty("Rear Right Motor Speed",
-                            [=]() { return m_rearRightMotor.Get(); },
-                            [=](double value) { m_rearRightMotor.Set(value); });
+  builder.AddDoubleProperty(
+      "Rear Right Motor Speed", [=]() { return -m_rearRightMotor.Get(); },
+      [=](double value) { m_rearRightMotor.Set(-value); });
 }
diff --git a/wpilibj/src/main/java/edu/wpi/first/wpilibj/drive/MecanumDrive.java b/wpilibj/src/main/java/edu/wpi/first/wpilibj/drive/MecanumDrive.java
index 087a51ce03..c2eaa23462 100644
--- a/wpilibj/src/main/java/edu/wpi/first/wpilibj/drive/MecanumDrive.java
+++ b/wpilibj/src/main/java/edu/wpi/first/wpilibj/drive/MecanumDrive.java
@@ -189,11 +189,11 @@ public class MecanumDrive extends RobotDriveBase {
     builder.setSmartDashboardType("MecanumDrive");
     builder.addDoubleProperty("Front Left Motor Speed", m_frontLeftMotor::get,
         m_frontLeftMotor::set);
-    builder.addDoubleProperty("Front Right Motor Speed", m_frontRightMotor::get,
-        m_frontRightMotor::set);
+    builder.addDoubleProperty("Front Right Motor Speed", () -> -m_frontRightMotor.get(),
+        value -> m_frontRightMotor.set(-value));
     builder.addDoubleProperty("Rear Left Motor Speed", m_rearLeftMotor::get,
         m_rearLeftMotor::set);
-    builder.addDoubleProperty("Rear Right Motor Speed", m_rearRightMotor::get,
-        m_rearRightMotor::set);
+    builder.addDoubleProperty("Rear Right Motor Speed", () -> -m_rearRightMotor.get(),
+        value -> m_rearRightMotor.set(-value));
   }
 }