diff --git a/memory/mozjemalloc/jemalloc.c b/memory/mozjemalloc/jemalloc.c
index 467c5a520c..fd9e7cd027 100644
--- a/memory/mozjemalloc/jemalloc.c
+++ b/memory/mozjemalloc/jemalloc.c
@@ -919,6 +919,8 @@ static const bool config_recycle = false;
 #define pagesize_2pow			((size_t) 13)
 #elif defined(__powerpc64__)
 #define pagesize_2pow			((size_t) 16)
+#elif defined(__loongarch__) || defined(__loongarch64)
+#define pagesize_2pow			((size_t) 14)
 #else
 #define pagesize_2pow			((size_t) 12)
 #endif