diff --git a/include/mbedtls/md.h b/include/mbedtls/md.h
index 111427f..c28ee1f 100644
--- a/include/mbedtls/md.h
+++ b/include/mbedtls/md.h
@@ -81,7 +81,7 @@
 #endif
 
 /**
- * Opaque struct defined in md_internal.h.
+ * Opaque struct defined in md.c.
  */
 typedef struct mbedtls_md_info_t mbedtls_md_info_t;