diff --git a/photon-lib/src/main/java/org/photonvision/SimVisionSystem.java b/photon-lib/src/main/java/org/photonvision/SimVisionSystem.java
index 9981ba901..92c2c215f 100644
--- a/photon-lib/src/main/java/org/photonvision/SimVisionSystem.java
+++ b/photon-lib/src/main/java/org/photonvision/SimVisionSystem.java
@@ -25,7 +25,6 @@ import org.photonvision.targeting.PhotonTrackedTarget;
 public class SimVisionSystem {
     SimPhotonCamera cam;
 
-    double camDiagFOVDegrees;
     double camHorizFOVDegrees;
     double camVertFOVDegrees;
     double cameraHeightOffGroundMeters;
@@ -71,7 +70,6 @@ public class SimVisionSystem {
             int cameraResWidth,
             int cameraResHeight,
             double minTargetArea) {
-        this.camDiagFOVDegrees = camDiagFOVDegrees;
         this.camPitchDegrees = camPitchDegrees;
         this.cameraToRobot = cameraToRobot;
         this.cameraHeightOffGroundMeters = cameraHeightOffGroundMeters;
diff --git a/photon-lib/src/main/native/cpp/photonlib/SimVisionSystem.cpp b/photon-lib/src/main/native/cpp/photonlib/SimVisionSystem.cpp
index aa8b8b854..a6e1be3e2 100644
--- a/photon-lib/src/main/native/cpp/photonlib/SimVisionSystem.cpp
+++ b/photon-lib/src/main/native/cpp/photonlib/SimVisionSystem.cpp
@@ -32,8 +32,7 @@ SimVisionSystem::SimVisionSystem(const std::string& name,
                                  units::meter_t cameraHeightOffGround,
                                  units::meter_t maxLEDRange, int cameraResWidth,
                                  int cameraResHeight, double minTargetArea)
-    : camDiagFOV(camDiagFOV),
-      camPitch(camPitch),
+    : camPitch(camPitch),
       cameraToRobot(cameraToRobot),
       cameraHeightOffGround(cameraHeightOffGround),
       maxLEDRange(maxLEDRange),
diff --git a/photon-lib/src/main/native/include/photonlib/SimVisionSystem.h b/photon-lib/src/main/native/include/photonlib/SimVisionSystem.h
index 479d7793b..480ad2bb7 100644
--- a/photon-lib/src/main/native/include/photonlib/SimVisionSystem.h
+++ b/photon-lib/src/main/native/include/photonlib/SimVisionSystem.h
@@ -50,7 +50,6 @@ class SimVisionSystem {
   void ProcessFrame(frc::Pose2d robotPose);
 
  private:
-  units::degree_t camDiagFOV;
   units::degree_t camPitch;
   frc::Transform2d cameraToRobot;
   units::meter_t cameraHeightOffGround;