diff --git a/src/cpu/x86/tsc/Makefile.inc b/src/cpu/x86/tsc/Makefile.inc
index bbebda9172..7e2eab2062 100644
--- a/src/cpu/x86/tsc/Makefile.inc
+++ b/src/cpu/x86/tsc/Makefile.inc
@@ -1,3 +1,4 @@
+bootblock-$(CONFIG_UDELAY_TSC) += delay_tsc.c
 ramstage-$(CONFIG_UDELAY_TSC) += delay_tsc.c
 romstage-$(CONFIG_TSC_CONSTANT_RATE) += delay_tsc.c
 verstage-$(CONFIG_TSC_CONSTANT_RATE) += delay_tsc.c