diff --git a/README.md b/README.md
index 6aee76a..ec972d5 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
 ======
 
 [![Build Status](https://travis-ci.org/GRRLIB/GRRLIB.svg?branch=master)](https://travis-ci.org/GRRLIB/GRRLIB)
+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/5b2983faefbf443eaa5705e7cc6e5f68)](https://www.codacy.com/app/Crayon2000/GRRLIB?utm_source=github.com&utm_medium=referral&utm_content=GRRLIB/GRRLIB&utm_campaign=Badge_Grade)
 [![Join the chat at https://gitter.im/GRRLIB/GRRLIB](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/GRRLIB/GRRLIB?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
 Table of Contents
diff --git a/examples/3D_CubedTileDemo/source/main.c b/examples/3D_CubedTileDemo/source/main.c
index ac2fcb4..952aac5 100644
--- a/examples/3D_CubedTileDemo/source/main.c
+++ b/examples/3D_CubedTileDemo/source/main.c
@@ -137,7 +137,7 @@ int main() {
     int bgx=-32, bgy=-32;
     float idperso=0;
     int i=0;
-    float sinnonameno=0, oldsinnonameno=0;
+    float sinnonameno=0;
     float camZ=1400.0f;
     float a=0;
 
@@ -266,7 +266,7 @@ int main() {
         }
         GRRLIB_DrawTile(TileMap1Width*9,TileMap1Height*6,tex_perso,0,1,1,0xFFFFFFFF,(int)idperso);
 
-        oldsinnonameno=sinnonameno;
+        const float oldsinnonameno=sinnonameno;
         for(i=0; i<8; i++) {
             GRRLIB_DrawTile(TileMap1Width*(6+i),(TileMap1Height*10)+sin(sinnonameno)*64,tex_nonameno,0,1,1,0xFFFFFFFF,i);
             sinnonameno+=0.4F;
diff --git a/examples/3D_sample3/source/main.c b/examples/3D_sample3/source/main.c
index 712c10b..f8aa057 100644
--- a/examples/3D_sample3/source/main.c
+++ b/examples/3D_sample3/source/main.c
@@ -20,7 +20,7 @@ int main() {
     float a=0;
     int cubeZ=5;
     int i=0;
-    float sinx=0, oldsinx=0;
+    float sinx=0;
 
     GRRLIB_Init();
     WPAD_Init();
@@ -133,7 +133,7 @@ int main() {
 
         // Switch To 2D Mode to display text
         GRRLIB_2dMode();
-        oldsinx=sinx;
+        const float oldsinx=sinx;
         for(i=0; i<rmode->efbHeight; i++) {
             GRRLIB_DrawTile(0+sin(sinx)*60,i,tex_screen,0,1,1,0xFFFFFFFF,i);
             sinx+=0.02f;
diff --git a/examples/TileDemo/source/main.c b/examples/TileDemo/source/main.c
index 4030072..1adb5b9 100644
--- a/examples/TileDemo/source/main.c
+++ b/examples/TileDemo/source/main.c
@@ -135,7 +135,7 @@ int main() {
     int bgx=-32, bgy=-32;
     float idperso=0;
     int i=0;
-    float sinnonameno=0, oldsinnonameno=0;
+    float sinnonameno=0;
 
     GRRLIB_Init();
     GRRLIB_Settings.antialias = false;
@@ -253,7 +253,7 @@ int main() {
         }
         GRRLIB_DrawTile(TileMap1Width*9,TileMap1Height*6,tex_perso,0,1,1,0xFFFFFFFF,(int)idperso);
 
-        oldsinnonameno=sinnonameno;
+        const float oldsinnonameno=sinnonameno;
         for(i=0; i<8; i++) {
             GRRLIB_DrawTile(TileMap1Width*(6+i),(TileMap1Height*10)+sin(sinnonameno)*64,tex_nonameno,0,1,1,0xFFFFFFFF,i);
             sinnonameno+=0.4F;