diff --git a/cont.c b/cont.c
index 8ee36b33..496503cc 100644
--- a/cont.c
+++ b/cont.c
@@ -57,23 +57,6 @@ pic_dynamic_wind(pic_state *pic, struct pic_proc *in, struct pic_proc *thunk, st
   return val;
 }
 
-struct pic_escape {
-  jmp_buf jmp;
-
-  bool valid;
-
-  struct pic_winder *wind;
-
-  ptrdiff_t sp_offset;
-  ptrdiff_t ci_offset;
-  ptrdiff_t xp_offset;
-  int arena_idx;
-
-  pic_code *ip;
-
-  pic_value results;
-};
-
 static int
 save_point(pic_state *pic, struct pic_escape *escape)
 {
diff --git a/include/picrin/cont.h b/include/picrin/cont.h
index c0868f79..f49d6595 100644
--- a/include/picrin/cont.h
+++ b/include/picrin/cont.h
@@ -9,6 +9,23 @@
 extern "C" {
 #endif
 
+struct pic_escape {
+  jmp_buf jmp;
+
+  bool valid;
+
+  struct pic_winder *wind;
+
+  ptrdiff_t sp_offset;
+  ptrdiff_t ci_offset;
+  ptrdiff_t xp_offset;
+  int arena_idx;
+
+  pic_code *ip;
+
+  pic_value results;
+};
+
 void pic_wind(pic_state *, struct pic_winder *, struct pic_winder *);
 pic_value pic_dynamic_wind(pic_state *, struct pic_proc *, struct pic_proc *, struct pic_proc *);