diff --git a/configure.ac b/configure.ac
index 712b787c..d7215bf0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -213,7 +213,7 @@ AC_FUNC_ALLOCA
 AC_FUNC_MMAP
 AC_TYPE_SIGNAL
 AC_FUNC_STRFTIME
-AC_CHECK_FUNCS(getcwd gettimeofday getwd putenv strdup strtoul uname)
+AC_CHECK_FUNCS(getcwd gettimeofday getwd putenv sbrk strdup strtoul uname)
 
 # FIXME: Remove AM_GNU_GETTEXT_VERSION once autoreconf supports REQUIRE_VERSION
 AM_GNU_GETTEXT_VERSION([0.19.6])
diff --git a/examples/mountlist.c b/examples/mountlist.c
index bbb005fc..6feacf91 100644
--- a/examples/mountlist.c
+++ b/examples/mountlist.c
@@ -71,7 +71,9 @@ main (int argc, char *argv [])
 
 	printf ("Host = '%s' - %u\n\n", buffer, port);
 
+#ifdef HAVE_SBRK
 	printf ("sbrk (0) = %p\n\n", sbrk (0));
+#endif
 
 	for (c = 0; c < PROFILE_COUNT; c++) {
 		mount_entries = glibtop_get_mountlist (&mount_list, 1);
@@ -79,7 +81,9 @@ main (int argc, char *argv [])
 		g_free (mount_entries);
 	}
 
+#ifdef HAVE_SBRK
 	printf ("sbrk (0) = %p\n\n", sbrk (0));
+#endif
 
 	mount_entries = glibtop_get_mountlist (&mount_list, 1);
 
@@ -108,7 +112,9 @@ main (int argc, char *argv [])
 
 	g_free (mount_entries);
 
+#ifdef HAVE_SBRK
 	printf ("\nsbrk (0) = %p\n\n", sbrk (0));
+#endif
 
 	glibtop_close ();