diff --git a/mjit.c b/mjit.c
index 48bebb0e7e..ee3aa3fb5e 100644
--- a/mjit.c
+++ b/mjit.c
@@ -262,7 +262,7 @@ rb_mjit_recompile_const(const rb_iseq_t *iseq)
 // Default permitted number of units with a JIT code kept in memory.
 #define DEFAULT_MAX_CACHE_SIZE 100
 // A default threshold used to add iseq to JIT.
-#define DEFAULT_CALL_THRESHOLD 10000
+#define DEFAULT_CALL_THRESHOLD 1
 
 #define opt_match_noarg(s, l, name) \
     opt_match(s, l, name) && (*(s) ? (rb_warn("argument to --mjit-" name " is ignored"), 1) : 1)
@@ -395,7 +395,9 @@ mjit_init(const struct mjit_options *opts)
 
     mjit_call_p = true;
 
-    // TODO: implement
+    // Normalize options
+    if (mjit_opts.call_threshold == 0)
+        mjit_opts.call_threshold = DEFAULT_CALL_THRESHOLD;
 }
 
 void