diff --git a/include/mbedtls/des.h b/include/mbedtls/des.h
index b0a82df..6eb7d03 100644
--- a/include/mbedtls/des.h
+++ b/include/mbedtls/des.h
@@ -67,10 +67,6 @@
 }
 mbedtls_des_context;
 
-#else  /* MBEDTLS_DES_ALT */
-#include "des_alt.h"
-#endif /* MBEDTLS_DES_ALT */
-
 /**
  * \brief          Triple-DES context structure
  */
@@ -80,6 +76,10 @@
 }
 mbedtls_des3_context;
 
+#else  /* MBEDTLS_DES_ALT */
+#include "des_alt.h"
+#endif /* MBEDTLS_DES_ALT */
+
 /**
  * \brief          Initialize DES context
  *