diff --git a/test/src/SFMT.c b/test/src/SFMT.c
index 433d7f6e..e6f8deec 100644
--- a/test/src/SFMT.c
+++ b/test/src/SFMT.c
@@ -49,6 +49,9 @@
 #include "test/jemalloc_test.h"
 #include "test/SFMT-params.h"
 
+#if defined(JEMALLOC_BIG_ENDIAN) && !defined(BIG_ENDIAN64)
+#define BIG_ENDIAN64 1
+#endif
 #if defined(__BIG_ENDIAN__) && !defined(__amd64) && !defined(BIG_ENDIAN64)
 #define BIG_ENDIAN64 1
 #endif