diff --git a/includes/animations.h b/includes/animations.h
index 928c7b1..85418ca 100644
--- a/includes/animations.h
+++ b/includes/animations.h
@@ -9,13 +9,13 @@
 extern GLuint _dims[];
 
 // Scène de manifestation
-void manif(int);
+void manif(const int);
 
 // Scène du tag sur le mur
-void tag(int);
+void tag(const int);
 
 // Crédits de fin
-void credits(int);
+void credits(const int);
 
 // Initialisation des transitions
 void transitions_init(void);
diff --git a/includes/font.h b/includes/font.h
index 0fe2417..a4db1e7 100644
--- a/includes/font.h
+++ b/includes/font.h
@@ -11,7 +11,7 @@
  * Renvoie 2 en cas de problème de chargement de la police
  *
  * Renvoie 0 en cas de succès */
-int initFont(TTF_Font **, char *, int);
+int initFont(TTF_Font **, const char *, const int);
 
 /* Ecris un texte sur une texture
  *
@@ -20,7 +20,8 @@ int initFont(TTF_Font **, char *, int);
  * Renvoie 2 en cas de problème de surface avec la SDL
  *
  * Renvoie 0 en cas de succès */
-int writeText(GLuint *, TTF_Font *, const char *, SDL_Color, GLuint *);
+int writeText(GLuint *, TTF_Font *, const char *, const SDL_Color,
+              const GLuint *);
 
 // Libère une police de la mémoire
 void freeFont(TTF_Font *);
diff --git a/includes/utils.h b/includes/utils.h
index 0599708..9885997 100644
--- a/includes/utils.h
+++ b/includes/utils.h
@@ -7,7 +7,7 @@
 #include <string.h>
 
 // Récupère un delta-temps
-double get_dt(double *, GLboolean);
+double get_dt(double *, const GLboolean);
 
 // Bind and load a matrix
 void bindAndLoadf(const char *name);
@@ -25,15 +25,15 @@ void bindAndLoadf(const char *name);
  * `+z` => move closer
  *
  * `-z` => move away */
-void move(GLfloat x, GLfloat y, GLfloat z);
+void move(const GLfloat x, const GLfloat y, const GLfloat z);
 
 // Rotate a vector XYZ
-void rotate_vec(GLfloat *, GLfloat);
+void rotate_vec(GLfloat *, const GLfloat);
 
 // Load an image into a GL texture
-void load_img(const char *filename, GLuint texture);
+void load_img(const char *filename, const GLuint texture);
 
 // Copy a texture
-void copy_texture(GLuint, GLuint);
+void copy_texture(const GLuint, const GLuint);
 
 #endif
diff --git a/main.c b/main.c
index 54fea18..3fcec86 100644
--- a/main.c
+++ b/main.c
@@ -11,7 +11,7 @@ GLuint _dims[] = {1280, 720};
 static void init(void);
 static void closure(void);
 
-int main(int argc, char *argv[]) {
+int main(const int argc, char *argv[]) {
   if (!gl4duwCreateWindow(argc, argv, "Demo API8 2023", GL4DW_POS_CENTERED,
                           GL4DW_POS_CENTERED, _dims[0], _dims[1],
                           GL4DW_OPENGL | GL4DW_SHOWN)) {
diff --git a/src/credits.c b/src/credits.c
index c8e5e8b..f8628ee 100644
--- a/src/credits.c
+++ b/src/credits.c
@@ -11,7 +11,7 @@ static void init(void);
 static void draw(void);
 static void deinit(void);
 
-void credits(int state) {
+void credits(const int state) {
   switch (state) {
   case GL4DH_INIT:
     init();
diff --git a/src/font.c b/src/font.c
index 9515d2a..efa195a 100644
--- a/src/font.c
+++ b/src/font.c
@@ -1,6 +1,6 @@
 #include "../includes/font.h"
 
-int initFont(TTF_Font **font, char *filename, int size) {
+int initFont(TTF_Font **font, const char *filename, const int size) {
   if (TTF_Init() == -1) {
     fprintf(stderr, "Erreur TTF : %s\n", TTF_GetError());
     return 1;
@@ -15,7 +15,7 @@ int initFont(TTF_Font **font, char *filename, int size) {
 }
 
 int writeText(GLuint *_textTexId, TTF_Font *font, const char *text,
-              SDL_Color color, GLuint *backgroundTextureId) {
+              const SDL_Color color, const GLuint *backgroundTextureId) {
   SDL_Surface *d, *s;
   // Create text
   if (!(d = TTF_RenderUTF8_Blended_Wrapped(font, text, color, 0))) {
diff --git a/src/manif.c b/src/manif.c
index 3ad185b..1bdd1f1 100644
--- a/src/manif.c
+++ b/src/manif.c
@@ -13,7 +13,7 @@ static const char *matrix_view = "view";
 static void init(void);
 static void draw(void);
 
-void manif(int state) {
+void manif(const int state) {
   switch (state) {
   case GL4DH_INIT:
     init();
diff --git a/src/tag.c b/src/tag.c
index c736fa6..b1ec2d3 100644
--- a/src/tag.c
+++ b/src/tag.c
@@ -12,7 +12,7 @@ static void init(void);
 static void draw(void);
 static void deinit(void);
 
-void tag(int state) {
+void tag(const int state) {
   switch (state) {
   case GL4DH_INIT:
     init();
diff --git a/src/utils.c b/src/utils.c
index 475962e..22fbf1c 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -1,6 +1,6 @@
 #include "../includes/utils.h"
 
-double get_dt(double *t0, GLboolean override_t0) {
+double get_dt(double *t0, const GLboolean override_t0) {
   double t = gl4dGetElapsedTime(), dt = (t - *t0) / 1000.0;
   if (override_t0) {
     *t0 = t;
@@ -14,9 +14,11 @@ void bindAndLoadf(const char *name) {
   gl4duLoadIdentityf();
 }
 
-void move(GLfloat x, GLfloat y, GLfloat z) { gl4duTranslatef(x, y, z); }
+void move(const GLfloat x, const GLfloat y, const GLfloat z) {
+  gl4duTranslatef(x, y, z);
+}
 
-void rotate_vec(GLfloat *vec, GLfloat angle) {
+void rotate_vec(GLfloat *vec, const GLfloat angle) {
   GLfloat y = vec[1];
   GLfloat z = vec[2];
 
@@ -27,7 +29,7 @@ void rotate_vec(GLfloat *vec, GLfloat angle) {
   vec[2] = y * sinTheta + z * cosTheta;
 }
 
-void load_img(const char *filename, GLuint texture) {
+void load_img(const char *filename, const GLuint texture) {
   glBindTexture(GL_TEXTURE_2D, texture);
 
   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
@@ -51,7 +53,7 @@ void load_img(const char *filename, GLuint texture) {
   glBindTexture(GL_TEXTURE_2D, 0);
 }
 
-void copy_texture(GLuint src, GLuint dst) {
+void copy_texture(const GLuint src, const GLuint dst) {
   if (!(src || dst)) {
     fprintf(stderr,
             "Erreur copie texture: Source/Destination pas initalisée\n");