diff --git a/src/3rdparty/win32_src/pdcurses/wincon/pdcwin.h b/src/3rdparty/win32_src/pdcurses/wincon/pdcwin.h
index d19a79c77..d12361201 100644
--- a/src/3rdparty/win32_src/pdcurses/wincon/pdcwin.h
+++ b/src/3rdparty/win32_src/pdcurses/wincon/pdcwin.h
@@ -1,5 +1,8 @@
 /* PDCurses */
 
+#ifndef __PDC_WIN_H__
+#define __PDC_WIN_H__
+
 #if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_DEPRECATE)
 # define _CRT_SECURE_NO_DEPRECATE 1   /* kill nonsense warnings */
 #endif
@@ -29,3 +32,5 @@ extern short pdc_oldf, pdc_oldb, pdc_oldu;
 extern bool pdc_conemu, pdc_wt, pdc_ansi;
 
 extern void PDC_blink_text(void);
+
+#endif
\ No newline at end of file