diff --git a/configure.ac b/configure.ac
index 1136d0a..dfab495 100644
--- a/configure.ac
+++ b/configure.ac
@@ -206,7 +206,7 @@ AC_CHECK_HEADERS([utmpx.h])
 AC_CHECK_HEADERS([termio.h])
 AC_CHECK_HEADERS([sys/uio.h])
 AC_LANG_PUSH(C++)
-AC_CHECK_HEADERS([tr1/memory])
+AC_CHECK_HEADERS([memory tr1/memory])
 AC_LANG_POP(C++)
 
 # Checks for typedefs, structures, and compiler characteristics.
diff --git a/src/util/shared.h b/src/util/shared.h
index bdd7df4..73404fb 100644
--- a/src/util/shared.h
+++ b/src/util/shared.h
@@ -35,6 +35,10 @@
 
 #include "config.h"
 
+#ifdef HAVE_MEMORY
+#include <memory>
+#endif
+
 #ifdef HAVE_TR1_MEMORY
 #include <tr1/memory>
 #endif