diff --git a/ntfsprogs/ntfssecaudit.c b/ntfsprogs/ntfssecaudit.c
index 9484a605..25b136b8 100644
--- a/ntfsprogs/ntfssecaudit.c
+++ b/ntfsprogs/ntfssecaudit.c
@@ -434,6 +434,16 @@ struct SDH {		/* this is an image of an $SDH index entry */
 	} ;
 
 #ifdef HAVE_WINDOWS_H
+
+// Copied from minwindef.h.
+#ifndef WINAPI
+#if defined(_ARM_)
+#define WINAPI
+#else
+#define WINAPI __stdcall
+#endif
+#endif
+
 /*
  *	Including <windows.h> leads to numerous conflicts with layout.h
  *	so define a few needed Windows calls unrelated to ntfs-3g
diff --git a/ntfsprogs/ntfsusermap.c b/ntfsprogs/ntfsusermap.c
index 6c1f61b8..b4c41070 100644
--- a/ntfsprogs/ntfsusermap.c
+++ b/ntfsprogs/ntfsusermap.c
@@ -142,6 +142,16 @@
 #include "misc.h"
 
 #ifdef HAVE_WINDOWS_H
+
+// Copied from minwindef.h.
+#ifndef WINAPI
+#if defined(_ARM_)
+#define WINAPI
+#else
+#define WINAPI __stdcall
+#endif
+#endif
+
 /*
  *	Including <windows.h> leads to numerous conflicts with layout.h
  *	so define a few needed Windows calls unrelated to ntfs-3g