diff --git a/configure b/configure
index edcf3637..99166102 100755
--- a/configure
+++ b/configure
@@ -11017,6 +11017,11 @@ cat >>confdefs.h <<\_ACEOF
 #define MONITOR_HEAP_SIZE 128
 _ACEOF
 
+
+cat >>confdefs.h <<\_ACEOF
+#define AWAY_HEAP_SIZE 128
+_ACEOF
+
 else
 
 cat >>confdefs.h <<\_ACEOF
@@ -11088,6 +11093,11 @@ cat >>confdefs.h <<\_ACEOF
 #define MONITOR_HEAP_SIZE 1024
 _ACEOF
 
+
+cat >>confdefs.h <<\_ACEOF
+#define AWAY_HEAP_SIZE 512
+_ACEOF
+
 fi
 
 
diff --git a/include/setup.h.in b/include/setup.h.in
index ea38d3d7..627dd80a 100644
--- a/include/setup.h.in
+++ b/include/setup.h.in
@@ -1,5 +1,8 @@
 /* include/setup.h.in.  Generated from configure.ac by autoheader.  */
 
+/* Size of away heap. */
+#undef AWAY_HEAP_SIZE
+
 /* Size of the ban heap. */
 #undef BAN_HEAP_SIZE