diff --git a/servers/physics/body_sw.h b/servers/physics/body_sw.h
index 021245fe50..b15173cd56 100644
--- a/servers/physics/body_sw.h
+++ b/servers/physics/body_sw.h
@@ -85,7 +85,7 @@ class BodySW : public CollisionObjectSW {
 
 		AreaSW *area;
 		_FORCE_INLINE_ bool operator==(const AreaCMP& p_cmp) const { return area->get_self() == p_cmp.area->get_self();}
-		_FORCE_INLINE_ bool operator<(const AreaCMP a) const { return area->get_priority() < a.area->get_priority();}
+		_FORCE_INLINE_ bool operator<(const AreaCMP& p_cmp) const { return area->get_priority() < p_cmp.area->get_priority();}
 		_FORCE_INLINE_ AreaCMP() {}
 		_FORCE_INLINE_ AreaCMP(AreaSW *p_area) { area=p_area;}
 	};
diff --git a/servers/physics_2d/body_2d_sw.h b/servers/physics_2d/body_2d_sw.h
index 516fab61e3..1de8e9e52e 100644
--- a/servers/physics_2d/body_2d_sw.h
+++ b/servers/physics_2d/body_2d_sw.h
@@ -92,7 +92,7 @@ class Body2DSW : public CollisionObject2DSW {
 
 		Area2DSW *area;
 		_FORCE_INLINE_ bool operator==(const AreaCMP& p_cmp) const { return area->get_self() == p_cmp.area->get_self();}
-		_FORCE_INLINE_ bool operator<(const AreaCMP a) const { return area->get_priority() < a.area->get_priority();}
+		_FORCE_INLINE_ bool operator<(const AreaCMP& p_cmp) const { return area->get_priority() < p_cmp.area->get_priority();}
 		_FORCE_INLINE_ AreaCMP() {}
 		_FORCE_INLINE_ AreaCMP(Area2DSW *p_area) { area=p_area;}
 	};