diff --git a/devices/floppy/floppyimg.h b/devices/floppy/floppyimg.h
index 9534e9b..9100b76 100644
--- a/devices/floppy/floppyimg.h
+++ b/devices/floppy/floppyimg.h
@@ -24,6 +24,7 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 #ifndef FLOPPY_IMG_H
 #define FLOPPY_IMG_H
 
+#include <cinttypes>
 #include <stdio.h>
 
 #define BLOCK_SIZE 512 // size in bytes of a logical block
diff --git a/machines/machineproperties.h b/machines/machineproperties.h
index 3ff7c14..9f7335a 100644
--- a/machines/machineproperties.h
+++ b/machines/machineproperties.h
@@ -25,8 +25,6 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 #include <string>
 #include <map>
 #include <memory>
-#include <limits>
-#include <utility>
 #include <vector>
 
 #ifndef MACHINE_PROPERTIES_H