1 files changed, 1 insertions, 1 deletions

diff --git a/src/charset.c b/src/charset.c
index 6967b9df611..1209ac6b68d 100644
--- a/src/charset.c
+++ b/src/charset.c
@@ -2337,7 +2337,7 @@ syms_of_charset (void)
      mmap for larger allocations, and these don't work well across dumped
      systems.  */
   enum {
-    initial_malloc_max = (1 << 16) - 1,
+    initial_malloc_max = (1 << 16) - 1 - XMALLOC_OVERRUN_CHECK_OVERHEAD,
     charset_table_size_init = initial_malloc_max / sizeof (struct charset)
   };