diff --git a/firmware/include/file.h b/firmware/include/file.h
index 2d5c9b88ab..1a43c6ad1d 100644
--- a/firmware/include/file.h
+++ b/firmware/include/file.h
@@ -22,12 +22,15 @@
 #ifndef _FILE_H_
 #define _FILE_H_
 
-#include <sys/types.h>
-#include "_ansi.h"
-
 #undef MAX_PATH /* this avoids problems when building simulator */
 #define MAX_PATH 260
 
+#ifdef __PCTOOL__
+#include <fcntl.h>
+#else
+#include <sys/types.h>
+#include "_ansi.h"
+
 #define MAX_OPEN_FILES 11
 
 #ifndef SEEK_SET
@@ -97,3 +100,4 @@ extern off_t filesize(int fd);
 extern int release_files(int volume);
 int fdprintf (int fd, const char *fmt, ...) ATTRIBUTE_PRINTF(2, 3);
 #endif
+#endif
diff --git a/firmware/include/sys/types.h b/firmware/include/sys/types.h
index 07f9e9c8c7..ecc25fd749 100644
--- a/firmware/include/sys/types.h
+++ b/firmware/include/sys/types.h
@@ -30,6 +30,9 @@
 /*
  * include string.h for size_t for convinence */
 #include <string.h>
+/* make some (debian, ubuntu...) systems happy that inappropriately include
+ * sys/types.h to get intN_t ... */
+#include <inttypes.h>
 
 #if !defined(__ssize_t_defined) && !defined(_SSIZE_T_) && !defined(ssize_t) && !defined(_SSIZE_T_DECLARED)
 #define __ssize_t_defined