diff --git a/user_guide_src/source/libraries/email.rst b/user_guide_src/source/libraries/email.rst
index 351b50d..d7e40f5 100644
--- a/user_guide_src/source/libraries/email.rst
+++ b/user_guide_src/source/libraries/email.rst
@@ -104,7 +104,7 @@
 **newline**         \\n                    "\\r\\n" or "\\n" or "\\r"   Newline character. (Use "\\r\\n" to comply with RFC 822).
 **bcc_batch_mode**  FALSE                  TRUE or FALSE (boolean)      Enable BCC Batch Mode.
 **bcc_batch_size**  200                    None                         Number of emails in each BCC batch.
-**dsn**		    FALSE		   TRUE or FALSE (boolean)	Enable notify message from server
+**dsn**             FALSE                  TRUE or FALSE (boolean)      Enable notify message from server
 =================== ====================== ============================ =======================================================================
 
 Email Function Reference