diff --git a/include/mbedtls/threading.h b/include/mbedtls/threading.h
index 96cadc4..fbc7374 100644
--- a/include/mbedtls/threading.h
+++ b/include/mbedtls/threading.h
@@ -31,8 +31,10 @@
 extern "C" {
 #endif
 
-#define MBEDTLS_ERR_THREADING_BAD_INPUT_DATA              -0x001C  /**< Bad input parameters to function. */
-#define MBEDTLS_ERR_THREADING_MUTEX_ERROR                 -0x001E  /**< Locking / unlocking / free failed with error code. */
+/** Bad input parameters to function. */
+#define MBEDTLS_ERR_THREADING_BAD_INPUT_DATA              -0x001C
+/** Locking / unlocking / free failed with error code. */
+#define MBEDTLS_ERR_THREADING_MUTEX_ERROR                 -0x001E
 
 #if defined(MBEDTLS_THREADING_PTHREAD)
 #include <pthread.h>