diff --git a/memory/mozjemalloc/jemalloc.c b/memory/mozjemalloc/jemalloc.c
index f4a9fd5d75..c89fb51b26 100644
--- a/memory/mozjemalloc/jemalloc.c
+++ b/memory/mozjemalloc/jemalloc.c
@@ -886,7 +886,8 @@ static const bool config_recycle = false;
  * controlling the malloc behavior are defined as compile-time constants
  * for best performance and cannot be altered at runtime.
  */
-#if !defined(__ia64__) && !defined(__sparc__) && !defined(__mips__) && !defined(__aarch64__)
+#if !defined(__ia64__) && !defined(__sparc__) && !defined(__mips__) && \
+    !defined(__aarch64__) && !defined(__loongarch__) && !defined(__loongarch64)
 #define MALLOC_STATIC_SIZES 1
 #endif