diff --git a/conf/init.zuma.rc b/conf/init.zuma.rc
index 32218072..edec02e5 100644
--- a/conf/init.zuma.rc
+++ b/conf/init.zuma.rc
@@ -383,6 +383,9 @@ on post-fs-data
     # Modem MDS log folder
     mkdir /data/vendor/radio/mds 0771 radio system
 
+    # Modem SIM log folder
+    mkdir /data/vendor/radio/sim 0771 radio system
+
     # Unzipped modem images folder
     mkdir /data/vendor/radio/image 0771 radio system