diff --git a/src/mhd2/mhd_cntnr_ptr.h b/src/mhd2/mhd_cntnr_ptr.h
index 2654ff34..a3e7db5e 100644
--- a/src/mhd2/mhd_cntnr_ptr.h
+++ b/src/mhd2/mhd_cntnr_ptr.h
@@ -20,7 +20,7 @@
 
 /**
  * @file src/mhd2/mhd_cntnr_ptr.h
- * @brief  The definition of mhd_cntnr_ptr() macro.
+ * @brief  The definition of mhd_CNTNR_PTR() macro.
  * @author Karlson2k (Evgeny Grin)
  */
 
@@ -45,7 +45,7 @@
  * @param membr_name the name of the member pointed by @a membr_ptr
  * @return the pointer to the outer structure
  */
-#define mhd_cntnr_ptr(membr_ptr,cntnr_type,membr_name)      \
+#define mhd_CNTNR_PTR(membr_ptr,cntnr_type,membr_name)      \
         ((cntnr_type*) (void*)                              \
          (((char*) (0 ?                                     \
                     (&(((cntnr_type*) NULL)->membr_name)) : \
diff --git a/src/mhd2/upgrade_prep.c b/src/mhd2/upgrade_prep.c
index 19738f60..e6c79910 100644
--- a/src/mhd2/upgrade_prep.c
+++ b/src/mhd2/upgrade_prep.c
@@ -420,7 +420,7 @@ mhd_upgrade_prep_for_action (struct MHD_Request *restrict req,
                              bool is_upload_act)
 {
   struct MHD_Connection *const c =
-    mhd_cntnr_ptr (req, struct MHD_Connection, rq);
+    mhd_CNTNR_PTR (req, struct MHD_Connection, rq);
 
   mhd_assert (mhd_HTTP_STAGE_HEADERS_PROCESSED <= c->stage);
   mhd_assert (mhd_HTTP_STAGE_FULL_REQ_RECEIVED >= c->stage);