diff --git a/src/microsim/cfmodels/MSCFModel.h b/src/microsim/cfmodels/MSCFModel.h
index 6110f0b24782..257bfc0b9a5f 100644
--- a/src/microsim/cfmodels/MSCFModel.h
+++ b/src/microsim/cfmodels/MSCFModel.h
@@ -313,7 +313,7 @@ class MSCFModel {
     /** @brief Get the vehicle type's maximum acceleration [m/s^2]
      * @return The maximum acceleration (in m/s^2) of vehicles of this class
      */
-    virtual inline double getCurrentAccel(const double speed) const {
+    virtual inline double getCurrentAccel(const double /*speed*/) const {
         return myAccel;
     }