diff --git a/non-GPL/Events/EventsTrace/EventsTrace.c b/non-GPL/Events/EventsTrace/EventsTrace.c
index 412328dd..f27d5ab6 100644
--- a/non-GPL/Events/EventsTrace/EventsTrace.c
+++ b/non-GPL/Events/EventsTrace/EventsTrace.c
@@ -283,7 +283,7 @@ static void out_escaped_string(const char *value)
                 // \x is not a valid escape character in json,
                 // and something like '\xff' will break a remarkable number of JSON parsers.
                 // we have to print as '0xff'
-                printf("x%02x", (uint8_t)c);
+                printf("0x%02x", (uint8_t)c);
             else
                 printf("%c", c);
         }