diff --git a/src/pci.c b/src/pci.c
index 1958b13ef..3f1b19872 100644
--- a/src/pci.c
+++ b/src/pci.c
@@ -1,6 +1,8 @@
 /* Copyright holders: Sarah Walker
    see COPYING for more details
 */
+#include <stdint.h>
+
 #include "ibm.h"
 #include "io.h"
 #include "mem.h"