diff --git a/include/jemalloc/internal/jemalloc_internal.h.in b/include/jemalloc/internal/jemalloc_internal.h.in
index c35280fa..086726d3 100644
--- a/include/jemalloc/internal/jemalloc_internal.h.in
+++ b/include/jemalloc/internal/jemalloc_internal.h.in
@@ -232,7 +232,7 @@ typedef unsigned szind_t;
 #  ifdef __alpha__
 #    define LG_QUANTUM		4
 #  endif
-#  if (defined(__sparc64__) || defined(__sparcv9))
+#  if (defined(__sparc64__) || defined(__sparcv9) || defined(__sparc_v9__))
 #    define LG_QUANTUM		4
 #  endif
 #  if (defined(__amd64__) || defined(__x86_64__) || defined(_M_X64))