diff --git a/dwarves.c b/dwarves.c
index 7a61fa4..af7ea8d 100644
--- a/dwarves.c
+++ b/dwarves.c
@@ -417,6 +417,11 @@ static void cu__find_class_holes(struct cu *cu)
 		class__find_holes(pos);
 }
 
+struct cus {
+	uint32_t	 nr_entries;
+	struct list_head cus;
+};
+
 bool cus__empty(const struct cus *cus)
 {
 	return list_empty(&cus->cus);
diff --git a/dwarves.h b/dwarves.h
index 4c4d17b..cbbc052 100644
--- a/dwarves.h
+++ b/dwarves.h
@@ -108,10 +108,7 @@ struct conf_fprintf {
 	uint8_t	   strip_inline:1;
 };
 
-struct cus {
-	uint32_t	      nr_entries;
-	struct list_head      cus;
-};
+struct cus;
 
 struct cus *cus__new(void);
 void cus__delete(struct cus *cus);