diff --git a/include/jemalloc/internal/jemalloc_internal_types.h b/include/jemalloc/internal/jemalloc_internal_types.h
index 6b987d6f..1b750b12 100644
--- a/include/jemalloc/internal/jemalloc_internal_types.h
+++ b/include/jemalloc/internal/jemalloc_internal_types.h
@@ -94,7 +94,7 @@ typedef int malloc_cpuid_t;
 #  ifdef __powerpc__
 #    define LG_QUANTUM		4
 #  endif
-#  ifdef __riscv__
+#  if defined(__riscv) || defined(__riscv__)
 #    define LG_QUANTUM		4
 #  endif
 #  ifdef __s390__