diff --git a/src/surface.c b/src/surface.c
index d5fe8a7..a434037 100644
--- a/src/surface.c
+++ b/src/surface.c
@@ -29,7 +29,7 @@ struct parm
 	unsigned char *grid;
 	unsigned char m, n;
 	function_t f;
-} parm;
+};
 
 // Función para escribir el archivo .klein
 int write_klein_file(const char *filename, unsigned char dim, unsigned long vertex, float *vertices, float *normals)
@@ -127,7 +127,7 @@ void klein(float *d_surface, int *coord, unsigned char *grid)
 	d_surface[3] = sin(v) * sin(u / 2);
 }
 
-float *generate_data_surface(unsigned char *dim, unsigned long *,vertex, struct parm *parm)
+float *generate_data_surface(unsigned char *dim, unsigned long *vertex, struct parm *parm)
 {
 	unsigned int i, j, k, o, p, n;
 	unsigned long size, q = 0;
@@ -352,7 +352,6 @@ int main()
     parm_instance.n = 4;
     parm_instance.f = cube;
     unsigned char dim;
-    unsigned char dim;
     unsigned long vertex;
     float *vertices, *normals;