diff --git a/src/modules/sanity/README b/src/modules/sanity/README
index 027725f1501..4493c7f3cdb 100644
--- a/src/modules/sanity/README
+++ b/src/modules/sanity/README
@@ -19,10 +19,12 @@ Nils Ohlmeier
               3.2. uri_checks (integer)
               3.3. proxy_require (string)
               3.4. autodrop (integer)
+              3.5. noreply (int)
 
         4. Functions
 
               4.1. sanity_check([msg_checks [, uri_checks]])
+              4.2. sanity_reply()
 
    List of Examples
 
@@ -30,9 +32,11 @@ Nils Ohlmeier
    1.2. Set uri_checks parameter
    1.3. Set proxy_require parameter
    1.4. Set autodrop parameter
-   1.5. sanity_check usage
-   1.6. sanity_check usage with parameter
-   1.7. sanity_check usage with two parameters
+   1.5. Set noreply parameter
+   1.6. sanity_check usage
+   1.7. sanity_check usage with parameter
+   1.8. sanity_check usage with two parameters
+   1.9. sanity_reply usage
 
 Chapter 1. Admin Guide
 
@@ -46,10 +50,12 @@ Chapter 1. Admin Guide
         3.2. uri_checks (integer)
         3.3. proxy_require (string)
         3.4. autodrop (integer)
+        3.5. noreply (int)
 
    4. Functions
 
         4.1. sanity_check([msg_checks [, uri_checks]])
+        4.2. sanity_reply()
 
 1. Overview
 
@@ -111,6 +117,7 @@ Chapter 1. Admin Guide
    3.2. uri_checks (integer)
    3.3. proxy_require (string)
    3.4. autodrop (integer)
+   3.5. noreply (int)
 
 3.1. default_checks (integer)
 
@@ -169,9 +176,24 @@ modparam("sanity", "proxy_require", "foo, bar")
 modparam("sanity", "autodrop", 1)
 ...
 
+3.5. noreply (int)
+
+   If set to 1, then the module does not send a SIP reply internally in
+   case there is an error detected when performing the sanity checks.
+   There is the option to send the reply from config file with functions
+   from sl or tm module as well as sanity_reply() from this module.
+
+   Default value: 0.
+
+   Example 1.5. Set noreply parameter
+...
+modparam("sanity", "noreply", 1)
+...
+
 4. Functions
 
    4.1. sanity_check([msg_checks [, uri_checks]])
+   4.2. sanity_reply()
 
 4.1.  sanity_check([msg_checks [, uri_checks]])
 
@@ -186,7 +208,7 @@ modparam("sanity", "autodrop", 1)
    The parameters can be static integers or variables holding integer
    values.
 
-   Example 1.5. sanity_check usage
+   Example 1.6. sanity_check usage
 ...
 if (!sanity_check()) {
         exit;
@@ -199,7 +221,7 @@ if (!sanity_check()) {
    of the checks (like for the module parameter) which should be executed
    at this function call.
 
-   Example 1.6. sanity_check usage with parameter
+   Example 1.7. sanity_check usage with parameter
 ...
 if (method=="REGISTER" && !sanity_check("256")) {
         /* the register contains an invalid expires value and is replied with a
@@ -212,7 +234,7 @@ if (method=="REGISTER" && !sanity_check("256")) {
    overwrites the global module parameter uri_checks and thus determines
    which URIs will be checked if the parse uri test will be executed.
 
-   Example 1.7. sanity_check usage with two parameters
+   Example 1.8. sanity_check usage with two parameters
 ...
 if (method=="INVITE" && !sanity_check("1024", "6")) {
         /* the INVITE contains an invalid From or To header and is replied with
@@ -220,3 +242,18 @@ a 400 */
         exit;
 }
 ...
+
+4.2.  sanity_reply()
+
+   Send a SIP reply using the code and reason text set internally by the
+   module when detecting errors while performing the sanity checks. It is
+   done only when parameter noreply is set to 1.
+
+   Example 1.9. sanity_reply usage
+...
+if(!sanity_check("1024", "6")) {
+   xdbg("sanity checks failed\n");
+   sanity_reply();
+   exit;
+}
+...