diff --git a/bl31/bl31.mk b/bl31/bl31.mk
index 6c9650f..93a60c7 100644
--- a/bl31/bl31.mk
+++ b/bl31/bl31.mk
@@ -31,6 +31,7 @@
 BL31_SOURCES		+=	bl31/bl31_main.c				\
 				bl31/context_mgmt.c				\
 				bl31/runtime_svc.c				\
+				bl31/interrupt_mgmt.c				\
 				bl31/aarch64/bl31_arch_setup.c			\
 				bl31/aarch64/bl31_entrypoint.S			\
 				bl31/aarch64/context.S				\