diff --git a/source/blender/blenkernel/intern/dynamicpaint.c b/source/blender/blenkernel/intern/dynamicpaint.c
index e1debd5cd5f..3fbd706ea2e 100644
--- a/source/blender/blenkernel/intern/dynamicpaint.c
+++ b/source/blender/blenkernel/intern/dynamicpaint.c
@@ -4482,7 +4482,7 @@ static int dynamicPaint_surfaceHasMoved(DynamicPaintSurface *surface, Object *ob
 	return ret;
 }
 
-static int surface_needsVelocityData(DynamicPaintSurface *surface, Scene *scene, Object *ob)
+static int surface_needsVelocityData(DynamicPaintSurface *surface, Scene *scene, Object *UNUSED(ob))
 {
 	if (surface->effect & MOD_DPAINT_EFFECT_DO_DRIP)
 		return 1;