diff --git a/legacy/ephysics/src/bin/ephysics_logo.c b/legacy/ephysics/src/bin/ephysics_logo.c
index aa8f996edb..faaff4e14e 100644
--- a/legacy/ephysics/src/bin/ephysics_logo.c
+++ b/legacy/ephysics/src/bin/ephysics_logo.c
@@ -6,9 +6,6 @@
 #include <EPhysics.h>
 #include <Evas.h>
 
-/* TODO: move to EPhysics.h */
-#define EPHYSICS_BODY_MASS_IMMUTABLE (0.0)
-
 #define WIDTH (512)
 #define HEIGHT (384)
 #define FLOOR_Y (HEIGHT - 80)
@@ -219,7 +216,7 @@ elm_main(int argc __UNUSED__, char **argv __UNUSED__)
    ephysics_world_render_geometry_set(world, 0, 0, WIDTH, HEIGHT);
 
    ground_body = ephysics_body_box_add(world);
-   ephysics_body_mass_set(ground_body, EPHYSICS_BODY_MASS_IMMUTABLE);
+   ephysics_body_mass_set(ground_body, EPHYSICS_BODY_MASS_STATIC);
    ephysics_body_geometry_set(ground_body, -100, FLOOR_Y, WIDTH + 800, 10);
    ephysics_body_restitution_set(ground_body, 0.65);
    ephysics_body_friction_set(ground_body, 0.8);
diff --git a/legacy/ephysics/src/lib/EPhysics.h b/legacy/ephysics/src/lib/EPhysics.h
index 2d07668c3a..52d6ec83c5 100644
--- a/legacy/ephysics/src/lib/EPhysics.h
+++ b/legacy/ephysics/src/lib/EPhysics.h
@@ -1287,6 +1287,16 @@ EAPI void ephysics_world_simulation_get(const EPhysics_World *world, double *fix
  * moved or rotated.
  */
 
+/**
+ * @def EPHYSICS_BODY_MASS_STATIC
+ * @brief Mass amount used to makes a body static.
+ *
+ * Body will be set with infinite mass, so it will be immovable.
+ *
+ * @see ephysics_body_mass_set() for details.
+ */
+#define EPHYSICS_BODY_MASS_STATIC (0.0)
+
 /**
  * @typedef EPhysics_Body_Collision
  *
@@ -1770,6 +1780,13 @@ EAPI void ephysics_body_geometry_get(const EPhysics_Body *body, Evas_Coord *x, E
  * an object's resistance to the change of its speed. It's required to apply
  * more force on objects with more mass to increase its speed.
  *
+ * If mass is set to 0 the body will have infinite mass, so it will be
+ * immovable, static. @ref EPHYSICS_BODY_MASS_STATIC can be used too.
+ *
+ * Negative mass is not allowed.
+ *
+ * By default, a body is created with 1 kg.
+ *
  * @note The unit used for mass is kilograms.
  *
  * @param body The body to has its mass set.
diff --git a/legacy/ephysics/src/lib/ephysics_body.cpp b/legacy/ephysics/src/lib/ephysics_body.cpp
index 35bf24f9eb..2d1a16336b 100644
--- a/legacy/ephysics/src/lib/ephysics_body.cpp
+++ b/legacy/ephysics/src/lib/ephysics_body.cpp
@@ -1401,6 +1401,12 @@ ephysics_body_mass_set(EPhysics_Body *body, double mass)
         return;
      }
 
+   if (mass < 0)
+     {
+        ERR("Can't set body's mass, it must to be non-negative.");
+        return;
+     }
+
    ephysics_world_lock_take(body->world);
    _ephysics_body_mass_set(body, mass);
    ephysics_world_lock_release(body->world);