3 files changed, 2 insertions, 3 deletions
diff --git a/src/drivers/bus/eisa.c b/src/drivers/bus/eisa.c
index d9d02d727..ee03df3af 100644
--- a/src/drivers/bus/eisa.c
+++ b/src/drivers/bus/eisa.c
@@ -4,7 +4,7 @@
 #include <stdio.h>
 #include <errno.h>
 #include <io.h>
-#include <timer.h>
+#include <unistd.h>
 #include <gpxe/eisa.h>
 
 static struct eisa_driver eisa_drivers[0]
diff --git a/src/drivers/bus/isapnp.c b/src/drivers/bus/isapnp.c
index 7903208d0..f4968eb13 100644
--- a/src/drivers/bus/isapnp.c
+++ b/src/drivers/bus/isapnp.c
@@ -61,7 +61,7 @@
 #include <stdio.h>
 #include <errno.h>
 #include <io.h>
-#include <timer.h>
+#include <unistd.h>
 #include <gpxe/isapnp.h>
 
 /**
diff --git a/src/drivers/bus/mca.c b/src/drivers/bus/mca.c
index 375a68344..eb7b7e395 100644
--- a/src/drivers/bus/mca.c
+++ b/src/drivers/bus/mca.c
@@ -11,7 +11,6 @@
 #include <stdio.h>
 #include <errno.h>
 #include <io.h>
-#include <timer.h>
 #include <gpxe/mca.h>
 
 static struct mca_driver mca_drivers[0]