diff --git a/openair2/UTIL/LOG/log.h b/openair2/UTIL/LOG/log.h
index c6eedf6bb3..9de693fa92 100755
--- a/openair2/UTIL/LOG/log.h
+++ b/openair2/UTIL/LOG/log.h
@@ -320,7 +320,7 @@ typedef struct LOG_params {
   int line;
   int comp;
   int level;
-  char *format;
+  const char *format;
   char l_buff_info [MAX_LOG_INFO];
   int len;
 } LOG_params;