diff --git a/arch/ia64/defconfig b/arch/ia64/defconfig
index 90bd960..461f8ee 100644
--- a/arch/ia64/defconfig
+++ b/arch/ia64/defconfig
@@ -98,7 +98,7 @@
 # CONFIG_ARCH_HAS_ILOG2_U64 is not set
 CONFIG_GENERIC_FIND_NEXT_BIT=y
 CONFIG_GENERIC_CALIBRATE_DELAY=y
-CONFIG_TIME_INTERPOLATION=y
+CONFIG_GENERIC_TIME=y
 CONFIG_DMI=y
 CONFIG_EFI=y
 CONFIG_GENERIC_IOMAP=y