diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index 979d9b46e..06bb0811f 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -368,7 +368,8 @@ void PrintConfigDef::init_fff_params()
 
     def = this->add("end_filament_gcode", coStrings);
     def->label = L("End G-code");
-    def->tooltip = L("This end procedure is inserted at the end of the output file, before the printer end gcode. "
+    def->tooltip = L("This end procedure is inserted at the end of the output file, before the printer end gcode (and "
+                   "before any toolchange from this filament in case of multimaterial printers). "
                    "Note that you can use placeholder variables for all Slic3r settings. "
                    "If you have multiple extruders, the gcode is processed in extruder order.");
     def->multiline = true;
@@ -1787,7 +1788,8 @@ void PrintConfigDef::init_fff_params()
 
     def = this->add("start_filament_gcode", coStrings);
     def->label = L("Start G-code");
-    def->tooltip = L("This start procedure is inserted at the beginning, after any printer start gcode. "
+    def->tooltip = L("This start procedure is inserted at the beginning, after any printer start gcode (and "
+                   "after any toolchange to this filament in case of multi-material printers). "
                    "This is used to override settings for a specific filament. If Slic3r detects "
                    "M104, M109, M140 or M190 in your custom codes, such commands will "
                    "not be prepended automatically so you're free to customize the order "
@@ -2042,9 +2044,10 @@ void PrintConfigDef::init_fff_params()
     
     def = this->add("toolchange_gcode", coString);
     def->label = L("Tool change G-code");
-    def->tooltip = L("This custom code is inserted right before every extruder change. "
-                   "Note that you can use placeholder variables for all Slic3r settings as well "
-                   "as [previous_extruder] and [next_extruder].");
+    def->tooltip = L("This custom code is inserted at every extruder change. If you don't leave this empty, you are "
+                     "expected to take care of the toolchange yourself - PrusaSlicer will not output any other G-code to "
+                     "change the filament. You can use placeholder variables for all Slic3r settings as well as [previous_extruder] "
+                     "and [next_extruder], so e.g. the standard toolchange command can be scripted as T[next_extruder].");
     def->multiline = true;
     def->full_width = true;
     def->height = 5;