diff --git a/ChangeLog b/ChangeLog
index 02c2f84b1..02030de8c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2007-12-20  Christian Persch  <chpe@gnome.org>
+
+	* glib/gchecksum.c: (g_checksum_new): Use g_slice_new0, to fix
+	"conditional jump or move depends on uninitialised value(s)" error
+	from valgrind. Bug #504527.
+
 2007-12-20 15:17:04  Tim Janik  <timj@imendio.com>
 
 	* Makefile.decl: generate HTML reports for test-report perf-report full-report.
diff --git a/glib/gchecksum.c b/glib/gchecksum.c
index 764b6059c..e6783de06 100644
--- a/glib/gchecksum.c
+++ b/glib/gchecksum.c
@@ -1112,7 +1112,7 @@ g_checksum_new (GChecksumType checksum_type)
 
   g_return_val_if_fail (IS_VALID_TYPE (checksum_type), NULL);
 
-  checksum = g_slice_new (GChecksum);
+  checksum = g_slice_new0 (GChecksum);
   checksum->type = checksum_type;
 
   switch (checksum_type)