diff --git a/frontend/drivers/platform_psp.c b/frontend/drivers/platform_psp.c
index ff9e23a53c..35d3469e54 100644
--- a/frontend/drivers/platform_psp.c
+++ b/frontend/drivers/platform_psp.c
@@ -145,7 +145,7 @@ static int exit_callback(int arg1, int arg2, void *common)
    return 0;
 }
 
-int callback_thread(SceSize args, void *argp)
+static int callback_thread(SceSize args, void *argp)
 {
    int cbid = sceKernelCreateCallback("Exit callback", exit_callback, NULL);
    sceKernelRegisterExitCallback(cbid);
@@ -184,8 +184,6 @@ static void frontend_psp_init(void *data)
 #endif
 }
 
-
-
 static void frontend_psp_exec(const char *path, bool should_load_game)
 {
 #if defined(HAVE_KERNEL_PRX) || defined(IS_SALAMANDER)