diff --git a/webserver/core/enip.cpp b/webserver/core/enip.cpp
index 5ea6020..4672da4 100644
--- a/webserver/core/enip.cpp
+++ b/webserver/core/enip.cpp
@@ -586,7 +586,7 @@ int processEnipMessage(unsigned char *buffer, int buffer_size)
     }*/
     else
     {
-        p = sprintf(p, "Unknown EtherNet/IP request: ");
+        p += sprintf(p, "Unknown EtherNet/IP request: ");
         int msg_size;
         if (((buffer_size * 3) + 40) < log_msg_max_size) // Each byte on buffer takes 3 bytes to be printed using "%02x ". Add 40 extra bytes for "preamble"
         {