diff --git a/source/src/cip/cipclass3connection.c b/source/src/cip/cipclass3connection.c
index 27f31cf1f..578d6d8f4 100644
--- a/source/src/cip/cipclass3connection.c
+++ b/source/src/cip/cipclass3connection.c
@@ -24,7 +24,7 @@ void Class3ConnectionTimeoutHandler(CipConnectionObject *connection_object) {
 
 /**** Implementation ****/
 CipError EstablishClass3Connection(
-  const CipConnectionObject *RESTRICT const connection_object,
+  CipConnectionObject *RESTRICT const connection_object,
   EipUint16 *const extended_error) {
   CipError cip_error = kCipErrorSuccess;
 
diff --git a/source/src/cip/cipclass3connection.h b/source/src/cip/cipclass3connection.h
index 24b6e8efa..d1c198f68 100644
--- a/source/src/cip/cipclass3connection.h
+++ b/source/src/cip/cipclass3connection.h
@@ -50,7 +50,7 @@ EipStatus CipClass3ConnectionObjectStateEstablishedHandler(
  *    - On an error the general status code to be put into the response
  */
 CipError EstablishClass3Connection(
-  const CipConnectionObject *RESTRICT const connection_object,
+  CipConnectionObject *RESTRICT const connection_object,
   EipUint16 *const extended_error);
 
 /** @brief Initializes the explicit connections mechanism