diff --git a/openair3/NAS/TOOLS/conf_usim.h b/openair3/NAS/TOOLS/conf_usim.h
index b53265a76a44534d0e773883acbe97206982d3d4..4768a6d8c0c9239a639fa82b5946ca013d0ad98b 100644
--- a/openair3/NAS/TOOLS/conf_usim.h
+++ b/openair3/NAS/TOOLS/conf_usim.h
@@ -27,7 +27,8 @@
 #define DEFAULT_MME_ID    0x0102
 #define DEFAULT_MME_CODE  0x0F
 
-#define INT_ALGO          USIM_INT_EIA1
+// TODO add this setting in configuration file
+#define INT_ALGO          USIM_INT_EIA2
 #define ENC_ALGO          USIM_ENC_EEA0
 #define SECURITY_ALGORITHMS (ENC_ALGO | INT_ALGO)