diff --git a/sweet_geometry.c b/sweet_geometry.c
index 5453b36..4363c49 100644
--- a/sweet_geometry.c
+++ b/sweet_geometry.c
@@ -288,9 +288,9 @@ free_all (struct map * map, struct vertex_array * array, struct face_item * root
 }
 
 int
-icosphere (unsigned int nb_iterations, float scale,
-           unsigned int ** mesh_indices, unsigned int * count_indices,
-           float ** mesh_vertices, unsigned int * count_vertices)
+sweet_geometry_icosphere (unsigned int nb_iterations, float scale,
+                          unsigned int ** mesh_indices, unsigned int * count_indices,
+                          float ** mesh_vertices, unsigned int * count_vertices)
 {
     struct face_item * root;
     struct face_item * f;
diff --git a/sweet_geometry.h b/sweet_geometry.h
index fd091ee..69849ef 100644
--- a/sweet_geometry.h
+++ b/sweet_geometry.h
@@ -1,8 +1,8 @@
 #ifndef SWEET_GEOMETRY_H
 #define SWEET_GEOMETRY_H
 
-int icosphere (unsigned int nb_iterations, float scale,
-               unsigned int ** mesh_indices, unsigned int * count_indices,
-               float ** mesh_vertices, unsigned int * count_vertices);
+int sweet_geometry_icosphere (unsigned int nb_iterations, float scale,
+                              unsigned int ** mesh_indices, unsigned int * count_indices,
+                              float ** mesh_vertices, unsigned int * count_vertices);
 #endif