diff --git a/contrib/10.math/math.c b/contrib/10.math/math.c
index 187941ad..592fe6fb 100644
--- a/contrib/10.math/math.c
+++ b/contrib/10.math/math.c
@@ -18,13 +18,13 @@ pic_number_floor2(pic_state *pic)
       ? i / j
       : (i / j) - 1;
 
-    return pic_return(pic, 2, pic_int_value(pic, k), pic_int_value(pic, i - k * j));
+    return pic_values(pic, 2, pic_int_value(pic, k), pic_int_value(pic, i - k * j));
   } else {
     double q, r;
 
     q = floor((double)i/j);
     r = i - j * q;
-    return pic_return(pic, 2, pic_float_value(pic, q), pic_float_value(pic, r));
+    return pic_values(pic, 2, pic_float_value(pic, q), pic_float_value(pic, r));
   }
 }
 
@@ -37,14 +37,14 @@ pic_number_trunc2(pic_state *pic)
   pic_get_args(pic, "II", &i, &e1, &j, &e2);
 
   if (e1 && e2) {
-    return pic_return(pic, 2, pic_int_value(pic, i/j), pic_int_value(pic, i - (i/j) * j));
+    return pic_values(pic, 2, pic_int_value(pic, i/j), pic_int_value(pic, i - (i/j) * j));
   } else {
     double q, r;
 
     q = trunc((double)i/j);
     r = i - j * q;
 
-    return pic_return(pic, 2, pic_float_value(pic, q), pic_float_value(pic, r));
+    return pic_values(pic, 2, pic_float_value(pic, q), pic_float_value(pic, r));
   }
 }
 
diff --git a/contrib/30.regexp/src/regexp.c b/contrib/30.regexp/src/regexp.c
index 5a9972be..9a7c0f79 100644
--- a/contrib/30.regexp/src/regexp.c
+++ b/contrib/30.regexp/src/regexp.c
@@ -120,7 +120,7 @@ pic_regexp_regexp_match(pic_state *pic)
     matches = pic_reverse(pic, matches);
     positions = pic_reverse(pic, positions);
   }
-  return pic_return(pic, 2, matches, positions);
+  return pic_values(pic, 2, matches, positions);
 }
 
 static pic_value
diff --git a/lib/cont.c b/lib/cont.c
index cc11dfbd..d319e62a 100644
--- a/lib/cont.c
+++ b/lib/cont.c
@@ -144,6 +144,19 @@ pic_alloca_cont(pic_state *pic)
   return pic_alloca(pic, sizeof(struct cont));
 }
 
+static pic_value
+values(pic_state *pic, int argc, pic_value *argv)
+{
+  int i;
+
+  for (i = 0; i < argc; ++i) {
+    pic->sp[i] = argv[i];
+  }
+  pic->ci->retc = argc;
+
+  return argc == 0 ? pic_undef_value(pic) : pic->sp[0];
+}
+
 static pic_value
 pic_callcc(pic_state *pic, pic_value proc)
 {
@@ -151,7 +164,7 @@ pic_callcc(pic_state *pic, pic_value proc)
   volatile struct cont *cont = pic_alloca_cont(pic);
 
   if (PIC_SETJMP(pic, jmp)) {
-    return pic_valuesk(pic, cont->retc, cont->retv);
+    return values(pic, cont->retc, cont->retv);
   }
   else {
     pic_value val;
@@ -167,19 +180,19 @@ pic_callcc(pic_state *pic, pic_value proc)
 }
 
 pic_value
-pic_return(pic_state *pic, int n, ...)
+pic_values(pic_state *pic, int n, ...)
 {
   va_list ap;
   pic_value ret;
 
   va_start(ap, n);
-  ret = pic_vreturn(pic, n, ap);
+  ret = pic_vvalues(pic, n, ap);
   va_end(ap);
   return ret;
 }
 
 pic_value
-pic_vreturn(pic_state *pic, int n, va_list ap)
+pic_vvalues(pic_state *pic, int n, va_list ap)
 {
   pic_value *retv = pic_alloca(pic, sizeof(pic_value) * n);
   int i;
@@ -187,20 +200,7 @@ pic_vreturn(pic_state *pic, int n, va_list ap)
   for (i = 0; i < n; ++i) {
     retv[i] = va_arg(ap, pic_value);
   }
-  return pic_valuesk(pic, n, retv);
-}
-
-pic_value
-pic_valuesk(pic_state *pic, int argc, pic_value *argv)
-{
-  int i;
-
-  for (i = 0; i < argc; ++i) {
-    pic->sp[i] = argv[i];
-  }
-  pic->ci->retc = argc;
-
-  return argc == 0 ? pic_undef_value(pic) : pic->sp[0];
+  return values(pic, n, retv);
 }
 
 int
@@ -247,7 +247,7 @@ pic_cont_values(pic_state *pic)
 
   pic_get_args(pic, "*", &argc, &argv);
 
-  return pic_valuesk(pic, argc, argv);
+  return values(pic, argc, argv);
 }
 
 static pic_value
@@ -273,9 +273,7 @@ pic_init_cont(pic_state *pic)
 {
   pic_defun(pic, "call-with-current-continuation", pic_cont_callcc);
   pic_defun(pic, "call/cc", pic_cont_callcc);
-  pic_defun(pic, "escape", pic_cont_callcc);
   pic_defun(pic, "dynamic-wind", pic_cont_dynamic_wind);
-
   pic_defun(pic, "values", pic_cont_values);
   pic_defun(pic, "call-with-values", pic_cont_call_with_values);
 }
diff --git a/lib/include/picrin.h b/lib/include/picrin.h
index c2127de2..d75a1a8a 100644
--- a/lib/include/picrin.h
+++ b/lib/include/picrin.h
@@ -349,9 +349,8 @@ pic_value pic_make_var(pic_state *, pic_value init, pic_value conv);
 void pic_defun(pic_state *, const char *name, pic_func_t f);
 void pic_defvar(pic_state *, const char *name, pic_value v);
 pic_value pic_funcall(pic_state *, const char *lib, const char *name, int n, ...);
-pic_value pic_return(pic_state *, int n, ...);
-pic_value pic_vreturn(pic_state *, int n, va_list);
-pic_value pic_valuesk(pic_state *, int n, pic_value *retv);
+pic_value pic_values(pic_state *, int n, ...);
+pic_value pic_vvalues(pic_state *, int n, va_list);
 int pic_receive(pic_state *, int n, pic_value *retv);