diff --git a/c/scheme.h b/c/scheme.h
index 7275a55..23901e5 100644
--- a/c/scheme.h
+++ b/c/scheme.h
@@ -1050,8 +1050,6 @@ value_t builtin_spawn(value_t *args, uint32_t nargs);
 
 value_t builtin_read_ini_file(value_t *args, uint32_t nargs);
 
-value_t builtin_color_name_to_rgb24(value_t *args, uint32_t nargs);
-
 value_t builtin_file_exists(value_t *args, uint32_t nargs);
 
 value_t builtin_get_environment_variables(value_t *args, uint32_t nargs);
@@ -1098,3 +1096,7 @@ extern char boot_image[];
 extern const size_t boot_image_size;
 
 #include "htableh_inc.h"
+
+// algo_color.c
+
+value_t builtin_color_name_to_rgb24(value_t *args, uint32_t nargs);