diff --git a/support/xhpast/ast.hpp b/support/xhpast/ast.hpp
--- a/support/xhpast/ast.hpp
+++ b/support/xhpast/ast.hpp
@@ -19,7 +19,6 @@
       short_tags = true;
       asp_tags = false;
       idx_expr = false;
-      include_debug = false;
       list_size = 0;
       pushStack();
     }
@@ -38,9 +37,6 @@
     std::stack<int> curly_stack; // tokens appearing before a {
     unsigned int list_size;
 
-    // Include line numbers and file names in XHP object creation.
-    bool include_debug;
-
     xhpast::token_list_t token_list;
 
     /* Utility functions for checking proper tag closing */
diff --git a/support/xhpast/xhpast.cpp b/support/xhpast/xhpast.cpp
--- a/support/xhpast/xhpast.cpp
+++ b/support/xhpast/xhpast.cpp
@@ -40,7 +40,6 @@
   void* scanner;
   yy_extra_type extra;
   extra.idx_expr = true;//flags.idx_expr;
-  extra.include_debug = true;//flags.include_debug;
   extra.insert_token = 0;//flags.eval ? T_OPEN_TAG_FAKE : 0;
   extra.short_tags = true;//flags.short_tags;
   extra.asp_tags = false;//flags.asp_tags;