--- a/memory/mozjemalloc/jemalloc.c
+++ b/memory/mozjemalloc/jemalloc.c
@@ -490,37 +490,33 @@ static pthread_key_t tlsIndex;
 #endif
 #ifdef __ia64__
 #  define QUANTUM_2POW_MIN	4
 #  define SIZEOF_PTR_2POW	3
 #endif
 #ifdef __alpha__
 #  define QUANTUM_2POW_MIN	4
 #  define SIZEOF_PTR_2POW	3
-#  define NO_TLS
 #endif
 #if defined(__sparc__) && defined(__arch64__)
 #  define QUANTUM_2POW_MIN	4
 #  define SIZEOF_PTR_2POW	3
-#  define NO_TLS
 #endif
 #ifdef __amd64__
 #  define QUANTUM_2POW_MIN	4
 #  define SIZEOF_PTR_2POW	3
 #  define CPU_SPINWAIT		__asm__ volatile("pause")
 #endif
 #ifdef __arm__
 #  define QUANTUM_2POW_MIN	3
 #  define SIZEOF_PTR_2POW	2
-#  define NO_TLS
 #endif
 #ifdef __mips__
 #  define QUANTUM_2POW_MIN	3
 #  define SIZEOF_PTR_2POW	2
-#  define NO_TLS
 #endif
 #ifdef __powerpc__
 #  define QUANTUM_2POW_MIN	4
 #  define SIZEOF_PTR_2POW	2
 #endif
 #endif
 
 #define	SIZEOF_PTR		(1U << SIZEOF_PTR_2POW)