diff --git a/hypervisor/Makefile b/hypervisor/Makefile
index f0259a01f..1da7ed1bc 100644
--- a/hypervisor/Makefile
+++ b/hypervisor/Makefile
@@ -85,8 +85,8 @@ D_SRCS += debug/serial.c
 D_SRCS += debug/uart16550.c
 D_SRCS += debug/console.c
 D_SRCS += debug/sbuf.c
-C_SRCS += debug/printf.c
-D_SRCS += boot/acpi.c
+D_SRCS += debug/printf.c
+C_SRCS += boot/acpi.c
 C_SRCS += boot/dmar_parse.c
 C_SRCS += arch/x86/ioapic.c
 C_SRCS += arch/x86/intr_lapic.c