diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index dd91061bb9..d203605e87 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -2495,11 +2495,11 @@ def = this->add("filament_loading_speed", coFloats);
             (void)L("Maximum speed E");
             def->category = L("Machine limits");
             def->readonly = false;
-            def->tooltip  = (boost::format("Maximum speed of %1% axis") % axis_upper).str();
-            (void)L("Maximum X speed");
-            (void)L("Maximum Y speed");
-            (void)L("Maximum Z speed");
-            (void)L("Maximum E speed");
+            def->tooltip  = (boost::format("Maximum speed of the %1% axis") % axis_upper).str();
+            (void)L("Maximum speed of the X axis");
+            (void)L("Maximum speed of the Y axis");
+            (void)L("Maximum speed of the Z axis");
+            (void)L("Maximum speed of the E axis");
             def->sidetext = L("mm/s");
             def->min = 0;
             def->mode = comSimple;