diff --git a/insns.def b/insns.def
index 87624a0500..30b7c626d7 100644
--- a/insns.def
+++ b/insns.def
@@ -693,7 +693,7 @@ checktype
 (VALUE val)
 (VALUE ret)
 {
-    ret = (TYPE(val) == (int)type) ? Qtrue : Qfalse;
+    ret = RBOOL(TYPE(val) == (int)type);
 }
 
 /**********************************************************/
diff --git a/yjit.rb b/yjit.rb
index 0bc353992c..09ed3faaf3 100644
--- a/yjit.rb
+++ b/yjit.rb
@@ -149,7 +149,7 @@ module RubyVM::YJIT
   end
 
   def self.enabled?
-    Primitive.cexpr! 'rb_yjit_enabled_p() ? Qtrue : Qfalse'
+    Primitive.cexpr! 'RBOOL(rb_yjit_enabled_p())'
   end
 
   def self.simulate_oom!