diff --git a/src/m4af.c b/src/m4af.c
index 1c51c00..45c2f7a 100644
--- a/src/m4af.c
+++ b/src/m4af.c
@@ -39,6 +39,14 @@ typedef struct m4af_chunk_entry_t {
     uint32_t duration;
 } m4af_chunk_entry_t;
 
+typedef struct m4af_itmf_entry_t {
+    uint32_t fcc;
+    char *name;
+    uint32_t type_code;
+    char *data;
+    uint32_t data_size;
+} m4af_itmf_entry_t;
+
 typedef struct m4af_track_t {
     uint32_t codec;
     uint32_t timescale;
diff --git a/src/m4af.h b/src/m4af.h
index 09ebe93..3a04742 100644
--- a/src/m4af.h
+++ b/src/m4af.h
@@ -71,14 +71,6 @@ typedef struct m4af_io_callbacks_t {
     m4af_tell_callback tell;
 } m4af_io_callbacks_t;
 
-typedef struct m4af_itmf_entry_t {
-    uint32_t fcc;
-    char *name;
-    uint32_t type_code;
-    char *data;
-    uint32_t data_size;
-} m4af_itmf_entry_t;
-
 typedef struct m4af_ctx_t m4af_ctx_t;