diff --git a/cpukit/libcsupport/ChangeLog b/cpukit/libcsupport/ChangeLog
index f0e4fac139..cbdb9b1091 100644
--- a/cpukit/libcsupport/ChangeLog
+++ b/cpukit/libcsupport/ChangeLog
@@ -1,3 +1,9 @@
+2005-05-13      Jennifer Averett <jennifer.averett@oarcorp.com>
+
+        * src/mallocfreespace.c: 
+        PR 786/rtems
+        Backport mallocfreespace optimization.
+
 2005-01-14	Ralf Corsepius <ralf.corsepius@rtems.org>
 
 	* src/gxx_wrappers.c: Backport from trunk. Add support for GCC-4.0.
diff --git a/cpukit/libcsupport/src/mallocfreespace.c b/cpukit/libcsupport/src/mallocfreespace.c
index bbf4a78e16..80c1855de8 100644
--- a/cpukit/libcsupport/src/mallocfreespace.c
+++ b/cpukit/libcsupport/src/mallocfreespace.c
@@ -35,10 +35,10 @@ extern rtems_id RTEMS_Malloc_Heap;
 
 size_t malloc_free_space( void )
 {
-  region_information_block   heap_info;
+  Heap_Information  heap_info;
 
-  if ( !rtems_region_get_information( RTEMS_Malloc_Heap, &heap_info ) ) {
-    return (size_t) heap_info.free_size;
+  if ( !rtems_region_get_free_information( RTEMS_Malloc_Heap, &heap_info ) ) {
+    return (size_t) heap_info.largest;
   }
   return (size_t) -1;
 }