diff --git a/include/asterisk/manager.h b/include/asterisk/manager.h
index cbbe1fb90d..aa657d6430 100644
--- a/include/asterisk/manager.h
+++ b/include/asterisk/manager.h
@@ -57,7 +57,7 @@
 #define EVENT_FLAG_CONFIG		(1 << 7) /* Ability to modify configurations */
 
 /* Export manager structures */
-#define AST_MAX_MANHEADERS 80
+#define AST_MAX_MANHEADERS 128
 
 struct mansession;