diff --git a/camlibs/smal/smal.c b/camlibs/smal/smal.c
index ef26bc534..7c8316661 100644
--- a/camlibs/smal/smal.c
+++ b/camlibs/smal/smal.c
@@ -52,7 +52,7 @@ camera_id (CameraText *id)
 }
 
 
-struct smal_cameras {
+static const struct smal_cameras {
 	char * name;
 	unsigned short idVendor;
 	unsigned short idProduct;