diff --git a/contrib/extractor/libmpq/common.h b/contrib/extractor/libmpq/common.h
index ad2c0f101..5794c162e 100644
--- a/contrib/extractor/libmpq/common.h
+++ b/contrib/extractor/libmpq/common.h
@@ -49,6 +49,12 @@
 	#include <io.h>
 #endif
 
+#ifdef O_LARGEFILE
+    #define MPQ_FILE_OPEN_FLAGS (O_RDONLY | O_BINARY | O_LARGEFILE)
+#else
+    #define MPQ_FILE_OPEN_FLAGS (O_RDONLY | O_BINARY)
+#endif
+
 #ifndef min
 	#define min(a, b) ((a < b) ? a : b)
 #endif
diff --git a/contrib/extractor/libmpq/mpq.cpp b/contrib/extractor/libmpq/mpq.cpp
index 0761d81ca..9582b72b5 100644
--- a/contrib/extractor/libmpq/mpq.cpp
+++ b/contrib/extractor/libmpq/mpq.cpp
@@ -59,7 +59,7 @@ int libmpq_archive_open(mpq_archive *mpq_a, unsigned char *mpq_filename) {
 	memset(mpq_a->header, 0, sizeof(mpq_header));
 
 	/* Check if file exists and is readable */
-	fd = _open((char *)mpq_filename, O_RDONLY | O_BINARY | O_LARGEFILE);
+	fd = _open((char *)mpq_filename, MPQ_FILE_OPEN_FLAGS);
 	if (fd == LIBMPQ_EFILE) {
 		return LIBMPQ_EFILE;
 	}