diff --git a/pjlib/include/pj/compat/m_alpha.h b/pjlib/include/pj/compat/m_alpha.h
index 89423e9..e2a6086 100644
--- a/pjlib/include/pj/compat/m_alpha.h
+++ b/pjlib/include/pj/compat/m_alpha.h
@@ -24,6 +24,8 @@
  * @brief Describes Alpha processor family specifics.
  */
 
+#define PJ_M_NAME		"alpha"
+
 #define PJ_HAS_PENTIUM		0
 #define PJ_IS_LITTLE_ENDIAN	1
 #define PJ_IS_BIG_ENDIAN	0