diff --git a/k/Makefile b/k/Makefile
index 4ed6e32..388d54c 100644
--- a/k/Makefile
+++ b/k/Makefile
@@ -32,7 +32,8 @@ OBJS	= \
 	  memory.o \
 	  serial.o \
 	  gdt.o \
-	  idt.o
+	  idt.o \
+	  isr.o
 
 
 DEPS = $(OBJS:.o=.d)
diff --git a/k/idt.c b/k/idt.c
index 0a2d74c..24ea79d 100644
--- a/k/idt.c
+++ b/k/idt.c
@@ -1,4 +1,5 @@
 #include "idt.h"
+#include "isr.h"
 
 static struct idt idt = { 0 };