diff --git a/include/input/VelocityControl.h b/include/input/VelocityControl.h
index f3c201e..b78f63e 100644
--- a/include/input/VelocityControl.h
+++ b/include/input/VelocityControl.h
@@ -88,7 +88,7 @@
     VelocityControl();
 
     /* Gets the various parameters. */
-    VelocityControlParameters& getParameters();
+    const VelocityControlParameters& getParameters() const;
 
     /* Sets the various parameters. */
     void setParameters(const VelocityControlParameters& parameters);