diff --git a/drivers/isdn/mISDN/dsp_core.c b/drivers/isdn/mISDN/dsp_core.c
index 43ff4d3b046e..6eac588e0a37 100644
--- a/drivers/isdn/mISDN/dsp_core.c
+++ b/drivers/isdn/mISDN/dsp_core.c
@@ -1114,7 +1114,7 @@ static struct Bprotocol DSP = {
 	.create = dspcreate
 };
 
-static int dsp_init(void)
+static int __init dsp_init(void)
 {
 	int err;
 	int tics;
@@ -1212,7 +1212,7 @@ static int dsp_init(void)
 }
 
 
-static void dsp_cleanup(void)
+static void __exit dsp_cleanup(void)
 {
 	mISDN_unregister_Bprotocol(&DSP);