diff --git a/code/fgame/vehicleturret.cpp b/code/fgame/vehicleturret.cpp
index 9a64e883..f2d8052a 100644
--- a/code/fgame/vehicleturret.cpp
+++ b/code/fgame/vehicleturret.cpp
@@ -370,6 +370,11 @@ void VehicleTurretGun::P_UserAim(usercmd_t *ucmd)
         return;
     }
 
+    if (!m_pVehicleOwner) {
+        // Added in OPM
+        return;
+    }
+
     if (!m_pVehicleOwner->IsSubclassOfVehicle()) {
         return;
     }