diff --git a/jemalloc/src/jemalloc.c b/jemalloc/src/jemalloc.c
index dcba9100..bd843a5f 100644
--- a/jemalloc/src/jemalloc.c
+++ b/jemalloc/src/jemalloc.c
@@ -197,7 +197,7 @@ __FBSDID("$FreeBSD: src/lib/libc/stdlib/malloc.c,v 1.183 2008/12/01 10:20:59 jas
 #ifdef __alpha__
 #  define QUANTUM_2POW		4
 #endif
-#ifdef __sparc64__
+#ifdef __sparc__
 #  define QUANTUM_2POW		4
 #endif
 #ifdef __amd64__
@@ -212,6 +212,9 @@ __FBSDID("$FreeBSD: src/lib/libc/stdlib/malloc.c,v 1.183 2008/12/01 10:20:59 jas
 #ifdef __powerpc__
 #  define QUANTUM_2POW		4
 #endif
+#ifdef __s390x__
+#  define QUANTUM_2POW		4
+#endif
 
 #define	QUANTUM			((size_t)(1U << QUANTUM_2POW))
 #define	QUANTUM_MASK		(QUANTUM - 1)