diff --git a/src/cam.c b/src/cam.c
index d2a2eb3..92f4387 100644
--- a/src/cam.c
+++ b/src/cam.c
@@ -94,7 +94,7 @@ static int mk_cam(facilities_t* facilities, uint8_t *cam_oer, uint32_t *cam_len)
     int rv = 0;
     int shm_fd, shm_valid = 0;
 
-    shm_fd = shm_open("it2s-bluetooth-decoded", O_RDONLY, 0666);
+    shm_fd = shm_open("it2s-bluetooth-decoded", O_CREAT | O_RDONLY, 0666);
     if(shm_fd == -1)
         syslog_err("[facilities] failed to open CAN shared memory\n");