diff --git a/package/iozone/iozone.mk b/package/iozone/iozone.mk
index ebb6243651..32d57ea76e 100644
--- a/package/iozone/iozone.mk
+++ b/package/iozone/iozone.mk
@@ -4,8 +4,8 @@
 #
 ################################################################################
 
-IOZONE_VERSION = 3_490
-IOZONE_SOURCE = iozone$(IOZONE_VERSION).tar
+IOZONE_VERSION = 3.490
+IOZONE_SOURCE = iozone$(subst .,_,$(IOZONE_VERSION)).tar
 IOZONE_SITE = http://www.iozone.org/src/current
 IOZONE_LICENSE = IOzone license (NO DERIVED WORKS ALLOWED)
 # IOzone license details can be found at: