diff --git a/gtk/hello_world/build.sh b/c/gtk_hello_world/build.sh
similarity index 100%
rename from gtk/hello_world/build.sh
rename to c/gtk_hello_world/build.sh
diff --git a/gtk/hello_world/hello_world b/c/gtk_hello_world/hello_world
similarity index 100%
rename from gtk/hello_world/hello_world
rename to c/gtk_hello_world/hello_world
diff --git a/gtk/hello_world/hello_world.c b/c/gtk_hello_world/hello_world.c
similarity index 100%
rename from gtk/hello_world/hello_world.c
rename to c/gtk_hello_world/hello_world.c