diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 0774a13512b..b513c4082ac 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2013-06-26  Sergio Durigan Junior  <sergiodj@redhat.com>
+
+	* ax-gdb.h (union exp_element): Forward declare.
+	* parser-defs.h: Include expression.h.
+
 2013-06-26  Maciej W. Rozycki  <macro@codesourcery.com>
 
 	* mips-tdep.c (fetch_mips_16): Use unmake_compact_addr.
diff --git a/gdb/ax-gdb.h b/gdb/ax-gdb.h
index 65e703e137c..a512cb51404 100644
--- a/gdb/ax-gdb.h
+++ b/gdb/ax-gdb.h
@@ -20,6 +20,7 @@
 #define AX_GDB_H
 
 struct expression;
+union exp_element;
 
 /* Types and enums */
 
diff --git a/gdb/parser-defs.h b/gdb/parser-defs.h
index 8d25311d27b..5fbae0db593 100644
--- a/gdb/parser-defs.h
+++ b/gdb/parser-defs.h
@@ -25,6 +25,7 @@
 
 #include "doublest.h"
 #include "vec.h"
+#include "expression.h"
 
 struct block;