diff --git a/drivers/media/video/cx88/cx88-tvaudio.c b/drivers/media/video/cx88/cx88-tvaudio.c
index 1e4278b..5785c34 100644
--- a/drivers/media/video/cx88/cx88-tvaudio.c
+++ b/drivers/media/video/cx88/cx88-tvaudio.c
@@ -726,7 +726,7 @@
 
 /* ----------------------------------------------------------- */
 
-int cx88_detect_nicam(struct cx88_core *core)
+static int cx88_detect_nicam(struct cx88_core *core)
 {
 	int i, j = 0;