diff --git a/tools/blisp/src/file_parsers/dfu/dfu_file.c b/tools/blisp/src/file_parsers/dfu/dfu_file.c
index bac7d45..24c9c36 100644
--- a/tools/blisp/src/file_parsers/dfu/dfu_file.c
+++ b/tools/blisp/src/file_parsers/dfu/dfu_file.c
@@ -5,6 +5,10 @@
 #include <stdlib.h>
 #include "parse_file.h"
 
+#if defined(_MSC_VER)
+#include <sys\types.h>
+#endif
+
 #define DFU_SUFFIX_LENGTH 16
 #define LMDFU_PREFIX_LENGTH 8
 #define LPCDFU_PREFIX_LENGTH 16
diff --git a/tools/blisp/src/file_parsers/parse_file.h b/tools/blisp/src/file_parsers/parse_file.h
index a792923..2380b51 100644
--- a/tools/blisp/src/file_parsers/parse_file.h
+++ b/tools/blisp/src/file_parsers/parse_file.h
@@ -2,6 +2,10 @@
 #define PARSE_FILE_H_
 #include <stdio.h>
 #include <stdlib.h>
+#if defined(_MSC_VER)
+#include <BaseTsd.h>
+typedef SSIZE_T ssize_t;
+#endif
 #include "parsed_firmware_file.h"
 
 #define PARSED_ERROR_INVALID_FILETYPE -0x1000