diff --git a/data/campaigns/Under_the_Burning_Suns/utils/garak-abilities.cfg b/data/campaigns/Under_the_Burning_Suns/utils/garak-abilities.cfg
index f2654df1912..91083baadbe 100644
--- a/data/campaigns/Under_the_Burning_Suns/utils/garak-abilities.cfg
+++ b/data/campaigns/Under_the_Burning_Suns/utils/garak-abilities.cfg
@@ -52,9 +52,10 @@
                             -- having a message that tells you that the unit gained 0 XP is simply obnoxious
                             if xp_to_add > 0 then
                                 student.experience = student.experience + xp_to_add
-                                -- performance-wise, string concatenation is slower than string interpolation
-                                -- but it's way more readable than two nested interpolations...
-                                wesnoth.interface.float_label(student.x, student.y, "<span color='cyan'>" .. tostring(_ "+%d XP"):format(xp_to_add) .. "</span>")
+                                -- po: Floating text shown when Garak's teaching ability transfers experience points
+                                local xp_string = _ "+$amount XP"
+                                xp_string = xp_string:vformat{amount = xp_to_add}
+                                wesnoth.interface.float_label(student.x, student.y, "<span color='cyan'>" .. xp_string .. "</span>")
                                 if student.experience >= student.max_experience then
                                     -- advance unit, animate and fire events
                                     student:advance(true, true)