diff --git a/src/lib_rdi_format/rdi_format.h b/src/lib_rdi_format/rdi_format.h
index bbf04e99..3d7b32d3 100644
--- a/src/lib_rdi_format/rdi_format.h
+++ b/src/lib_rdi_format/rdi_format.h
@@ -306,7 +306,8 @@ typedef enum RDI_LanguageEnum
 RDI_Language_NULL       = 0,
 RDI_Language_C          = 1,
 RDI_Language_CPlusPlus  = 2,
-RDI_Language_COUNT      = 3,
+RDI_Language_Masm       = 3,
+RDI_Language_COUNT      = 4,
 } RDI_LanguageEnum;
 
 typedef RDI_U16 RDI_TypeKind;
@@ -367,6 +368,7 @@ RDI_TypeKind_IncompleteClass      = 0x2007,
 RDI_TypeKind_IncompleteEnum       = 0x2008,
 RDI_TypeKind_Bitfield             = 0xF000,
 RDI_TypeKind_Variadic             = 0xF001,
+RDI_TypeKind_Count                = 0xF002,
 RDI_TypeKind_FirstBuiltIn         = RDI_TypeKind_Void,
 RDI_TypeKind_LastBuiltIn          = RDI_TypeKind_ComplexF128,
 RDI_TypeKind_FirstConstructed     = RDI_TypeKind_Modifier,
@@ -655,6 +657,7 @@ X(RDI_U32, line_map_voff_base_idx)\
 X(NULL)\
 X(C)\
 X(CPlusPlus)\
+X(Masm)\
 X(COUNT)\
 
 #define RDI_TypeKind_XList \
@@ -713,6 +716,7 @@ X(IncompleteClass)\
 X(IncompleteEnum)\
 X(Bitfield)\
 X(Variadic)\
+X(Count)\
 
 #define RDI_TypeModifierFlags_XList \
 X(Const)\
diff --git a/src/rdi_format/rdi_format.mdesk b/src/rdi_format/rdi_format.mdesk
index c615ec78..bc3768ec 100644
--- a/src/rdi_format/rdi_format.mdesk
+++ b/src/rdi_format/rdi_format.mdesk
@@ -688,7 +688,8 @@ RDI_LanguageTable:
   {NULL        0}
   {C           1}
   {CPlusPlus   2}
-  {COUNT       3}
+  {Masm        3}
+  {COUNT       4}
 }
 
 @enum(RDI_U32) RDI_Language:
@@ -766,6 +767,7 @@ RDI_TypeKindTable:
   //-
   {Bitfield             0xF000     0                                             }
   {Variadic             0xF001     0                                             }
+  {Count                0xF002     0                                             }
 }
 
 @table(name value)