diff --git a/NEWS b/NEWS
index 49111b4a..95a8867b 100644
--- a/NEWS
+++ b/NEWS
@@ -39,6 +39,7 @@ Changes since 1.4.0:
 * Added ecrt_slave_sdo_upload() and ecrt_slave_sdo_download() methods to let
   an application transfer SDOs before activating the master. Thanks to Stefan
   Weiser.
+* Changed EC_MAX_SII_SIZE to 4096.
 
 Changes in 1.4.0:
 
diff --git a/master/globals.h b/master/globals.h
index fb83c22c..e7947d77 100644
--- a/master/globals.h
+++ b/master/globals.h
@@ -62,7 +62,7 @@
 #define EC_STATE_STRING_SIZE 32
 
 /** Maximum SII size in words, to avoid infinite reading. */
-#define EC_MAX_SII_SIZE 1024
+#define EC_MAX_SII_SIZE 4096
 
 /******************************************************************************
  * EtherCAT protocol