diff --git a/src/disk/hdc_esdi_mca.c b/src/disk/hdc_esdi_mca.c
index f9af1e864..47fcdb1b7 100644
--- a/src/disk/hdc_esdi_mca.c
+++ b/src/disk/hdc_esdi_mca.c
@@ -62,6 +62,7 @@
  */
 
 #include <stdarg.h>
+#include <stdbool.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
diff --git a/src/disk/hdc_ide.c b/src/disk/hdc_ide.c
index d4b44a13e..cad5ce111 100644
--- a/src/disk/hdc_ide.c
+++ b/src/disk/hdc_ide.c
@@ -18,6 +18,7 @@
  *          Copyright 2016-2020 Miran Grca.
  */
 #include <stdarg.h>
+#include <stdbool.h>
 #include <stdio.h>
 #include <stdint.h>
 #include <stdlib.h>
diff --git a/src/disk/hdd_image.c b/src/disk/hdd_image.c
index ba7cf18ba..066b295c7 100644
--- a/src/disk/hdd_image.c
+++ b/src/disk/hdd_image.c
@@ -18,6 +18,7 @@
  */
 #define _GNU_SOURCE
 #include <stdarg.h>
+#include <stdbool.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>