diff --git a/src/regexp_nfa.c b/src/regexp_nfa.c
index 7c4d407..18bc8d9 100644
--- a/src/regexp_nfa.c
+++ b/src/regexp_nfa.c
@@ -4315,7 +4315,7 @@
 
     // This function is called recursively.  When the depth is too much we run
     // out of stack and crash, limit recursiveness here.
-    if (++depth >= 10000 || subs == NULL)
+    if (++depth >= 5000 || subs == NULL)
     {
 	--depth;
 	return NULL;