diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 9b4dd033be4..e5f98293c32 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,7 @@
+2018-02-27  Martin Sebor  <msebor@redhat.com>
+
+	* pt.c: Avoid including <string> directly.
+
 2018-02-27  Martin Sebor  <msebor@redhat.com>
 
 	PR c++/83871
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index ae777db82fe..23eb2db1a5d 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -24,8 +24,8 @@ along with GCC; see the file COPYING3.  If not see
      all methods must be provided in header files; can't use a source
      file that contains only the method templates and "just win".  */
 
-#include <string>
 #include "config.h"
+#define INCLUDE_STRING
 #include "system.h"
 #include "coretypes.h"
 #include "cp-tree.h"