diff --git a/includes/animations.h b/includes/animations.h
index 2d417ba..7532ec7 100644
--- a/includes/animations.h
+++ b/includes/animations.h
@@ -1,11 +1,10 @@
 #ifndef DEMO_ANIMATION_HPP
 #define DEMO_ANIMATION_HPP 1
 
-#include <GL4D/gl4dh.h>
 #include <GL4D/gl4duw_SDL2.h>
-#include <SDL_ttf.h>
 
 #include "audio.h"
+#include "font.h"
 
 // Dimensions de la fenêtre
 extern GLuint _dims[];
diff --git a/includes/font.h b/includes/font.h
new file mode 100644
index 0000000..6036b4d
--- /dev/null
+++ b/includes/font.h
@@ -0,0 +1,21 @@
+#ifndef DEMO_FONT_HPP
+#define DEMO_FONT_HPP 1
+
+#include <GL4D/gl4dh.h>
+#include <SDL_ttf.h>
+
+/* Charge une police
+ * Renvoie 1 en cas de problème d'initialisation
+ * Renvoie 2 en cas de problème de chargement de la police
+ * Renvoie 0 en cas de succès */
+int initFont(TTF_Font **, char *, int);
+
+/* Ecris un texte sur une texture
+ * Renvoie 1 en cas de problème d'écriture sur la surface
+ * Renvoie 0 en cas de succès */
+int writeText(GLuint *, TTF_Font *, char *, SDL_Color);
+
+// Libère une police de la mémoire
+void freeFont(TTF_Font *);
+
+#endif
diff --git a/src/credits.c b/src/credits.c
index 74c1a6c..76d5c77 100644
--- a/src/credits.c
+++ b/src/credits.c
@@ -30,50 +30,25 @@ static void init(void) {
   gl4duGenMatrix(GL_FLOAT, "proj");
   _quadId = gl4dgGenQuadf();
 
-  // Font
-  char *text = "                    CRÉDITS\n\n"
-               "Concours API8 — 7e édition\n"
-               "Font: fontesk et fontsquirrel\n"
-               "Audio: beepbox\n"
-               "Librairies: GL4D, SDL2 et extensions";
-  char *fontName = "fonts/Instrument.ttf";
-
-  SDL_Color c = {255, 255, 255, 255};
-  SDL_Surface *d, *s;
+  // Charge la police
   TTF_Font *font = NULL;
-
-  if (TTF_Init() == -1) {
-    fprintf(stderr, "Erreur TTF : %s\n", TTF_GetError());
-    exit(3);
+  if (initFont(&font, "fonts/Instrument.ttf", 100)) {
+    exit(1);
   }
 
-  glGenTextures(1, &_textTexId);
-  glBindTexture(GL_TEXTURE_2D, _textTexId);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-
-  if (!(font = TTF_OpenFont(fontName, 100))) {
-    fprintf(stderr, "Erreur TTF : %s\n", TTF_GetError());
-    exit(3);
+  // Ecrit avec la police sur une texture
+  if (writeText(&_textTexId, font,
+                "                    CRÉDITS\n\n"
+                "Concours API8 — 7e édition\n"
+                "Font: fontesk et fontsquirrel\n"
+                "Audio: beepbox\n"
+                "Librairies: GL4D, SDL2 et extensions",
+                (SDL_Color){255, 255, 255, 255})) {
+    exit(1);
   }
 
-  if ((d = TTF_RenderUTF8_Blended_Wrapped(font, text, c, 0)) == NULL) {
-    TTF_CloseFont(font);
-    fprintf(stderr, "Erreur TTF : TTF_RenderUTF8_Blended_Wrapped\n");
-    exit(3);
-  }
-
-  assert((s = SDL_CreateRGBSurface(0, d->w, d->h, 32, R_MASK, G_MASK, B_MASK,
-                                   A_MASK)));
-  SDL_BlitSurface(d, NULL, s, NULL);
-  SDL_FreeSurface(d);
-
-  glBindTexture(GL_TEXTURE_2D, _textTexId);
-  glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, s->w, s->h, 0, GL_RGBA,
-               GL_UNSIGNED_BYTE, s->pixels);
-
-  SDL_FreeSurface(s);
-  TTF_CloseFont(font);
-  glBindTexture(GL_TEXTURE_2D, 0);
+  // Libère la police de la mémoire
+  freeFont(font);
 }
 
 static void draw(void) {
diff --git a/src/font.c b/src/font.c
new file mode 100644
index 0000000..aa5333e
--- /dev/null
+++ b/src/font.c
@@ -0,0 +1,50 @@
+#include "../includes/font.h"
+#include "SDL_ttf.h"
+
+int initFont(TTF_Font **font, char *filename, int size) {
+  if (TTF_Init() == -1) {
+    fprintf(stderr, "Erreur TTF : %s\n", TTF_GetError());
+    return 1;
+  }
+
+  if (!(*font = TTF_OpenFont(filename, size))) {
+    fprintf(stderr, "Erreur TTF : %s\n", TTF_GetError());
+    return 2;
+  }
+
+  return 0;
+}
+
+int writeText(GLuint *_textTexId, TTF_Font *font, char *text, SDL_Color color) {
+  glGenTextures(1, _textTexId);
+  glBindTexture(GL_TEXTURE_2D, *_textTexId);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+
+  SDL_Surface *d, *s;
+  if ((d = TTF_RenderUTF8_Blended_Wrapped(font, text, color, 0)) == NULL) {
+    freeFont(font);
+    fprintf(stderr, "Erreur TTF : TTF_RenderUTF8_Blended_Wrapped\n");
+    return 1;
+  }
+
+  assert((s = SDL_CreateRGBSurface(0, d->w, d->h, 32, R_MASK, G_MASK, B_MASK,
+                                   A_MASK)));
+  SDL_BlitSurface(d, NULL, s, NULL);
+  SDL_FreeSurface(d);
+
+  glBindTexture(GL_TEXTURE_2D, *_textTexId);
+  glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, s->w, s->h, 0, GL_RGBA,
+               GL_UNSIGNED_BYTE, s->pixels);
+
+  SDL_FreeSurface(s);
+  glBindTexture(GL_TEXTURE_2D, 0);
+
+  return 0;
+}
+
+void freeFont(TTF_Font *font) {
+  if (font) {
+    TTF_CloseFont(font);
+    font = NULL;
+  }
+}