diff --git a/include/klein/klein.h b/include/klein/klein.h
index 6265adf..663c8f1 100644
--- a/include/klein/klein.h
+++ b/include/klein/klein.h
@@ -39,8 +39,8 @@ int klein_export_file(struct klein klein, const char * filename)
 	fwrite("\0", 1, 1, file);
 	fwrite(&klein.dim, 1, 1, file);
 	fwrite(&klein.vertex_size, 8, 1, file);
-	fwrite(klein.vertex, 16, klein.vertex_size * klein.dim, file);
-	fwrite(klein.normals, 16, klein.vertex_size * klein.dim, file);
+	fwrite(klein.vertex, 4, klein.vertex_size * klein.dim, file);
+	fwrite(klein.normals, 4, klein.vertex_size * klein.dim, file);
 
 	fclose(file);
 	return 0;
diff --git a/src/klein.c b/src/klein.c
index 8add64b..7c01494 100644
--- a/src/klein.c
+++ b/src/klein.c
@@ -7,7 +7,7 @@
 		5 bytes with KLEIN
 		1 byte empty for scaling
 		1 byte with the dimention of the surface
-		8 bytes interprated as a long with the number of vertex
+		8 bytes interprated as an int  with the number of vertex
 		n bytes with the vertex data of the surface
 		n bytes with the normal data of the surface
 
@@ -35,10 +35,10 @@ int create_surface_klein(unsigned char *path, struct surface *surface)
 
 	size = surface->dim * surface->vertex;
 
-	surface->data = malloc(16 * size);
-	fread(surface->data, 16, size, file);
+	surface->data = malloc(4 * size);
+	fread(surface->data, 4, size, file);
 
-	surface->norm = malloc(16 * size);
-	fread(surface->norm, 16, size, file);
+	surface->norm = malloc(4 * size);
+	fread(surface->norm, 4, size, file);
 	return 0;
 }
diff --git a/src/main.h b/src/main.h
index 6ae5ebd..6f40d61 100644
--- a/src/main.h
+++ b/src/main.h
@@ -4,7 +4,9 @@
 	error of the shaders.
 */
 
+#include <stdint.h>
 #define DEBUG
+#define GLFW_INCLUDE_NONE
 
 typedef const void *window_t;
 typedef unsigned int id_t;
@@ -40,8 +42,8 @@ struct projection
 struct surface
 {
 	float *data, *norm;
-	unsigned long vertex;
-	unsigned char dim;
+	uint64_t vertex;
+	uint8_t dim;
 };
 
 /*