diff --git a/ChangeLog b/ChangeLog
index ba0f860b..532dbb72 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2007-03-29  Doug MacEachern  <dougm@hyperic.com>
+
+        *  Fix cpu ticks to msec on linux/ia64
+           Submitted by: Jan Kneschke <jan.kneschke@mysql.com>
+
 2007-03-24  Doug MacEachern  <dougm@hyperic.com>
 
         * Implement proc_state_t.threads on OS X
diff --git a/include/sigar_private.h b/include/sigar_private.h
index 97994b78..36756502 100644
--- a/include/sigar_private.h
+++ b/include/sigar_private.h
@@ -118,8 +118,11 @@
     ((sigar_uint64_t)(s) * (sigar_uint64_t)SIGAR_NSEC)
 
 /* cpu ticks to milliseconds */
-#define SIGAR_TICK2MSEC(s) ((sigar_uint64_t)(s) * ((sigar_uint64_t)SIGAR_MSEC / sigar->ticks))
-#define SIGAR_TICK2NSEC(s) ((sigar_uint64_t)(s) * ((sigar_uint64_t)SIGAR_NSEC / sigar->ticks))
+#define SIGAR_TICK2MSEC(s) \
+   ((sigar_uint64_t)(s) * ((sigar_uint64_t)SIGAR_MSEC / (double)sigar->ticks))
+
+#define SIGAR_TICK2NSEC(s) \
+   ((sigar_uint64_t)(s) * ((sigar_uint64_t)SIGAR_NSEC / (double)sigar->ticks))
 
 #define IFTYPE_LO  2
 #define IFTYPE_ETH 3