diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index 2f88aa019..fe64e8aa6 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -98,7 +98,9 @@ void PrintConfigDef::init_common_params()
     def = this->add("print_host", coString);
     def->label = L("Hostname, IP or URL");
     def->tooltip = L("Slic3r can upload G-code files to a printer host. This field should contain "
-                   "the hostname, IP address or URL of the printer host instance.");
+                   "the hostname, IP address or URL of the printer host instance. "
+                   "Print host behind HAProxy with basic auth enabled can be accessed by putting the user name and password into the URL "
+                   "in the following format: https://username:password@your-octopi-address/");
     def->mode = comAdvanced;
     def->set_default_value(new ConfigOptionString(""));