Index: binaries/data/mods/public/gui/session/selection_details.js
===================================================================
--- binaries/data/mods/public/gui/session/selection_details.js
+++ binaries/data/mods/public/gui/session/selection_details.js
@@ -258,8 +258,10 @@
 	{
 		resourceCarryingIcon.sprite = "stretched:session/icons/repair.png";
 		resourceCarryingIcon.tooltip = getBuildTimeTooltip(entState);
-		resourceCarryingText.caption = entState.foundation.numBuilders ?
-			Engine.FormatMillisecondsIntoDateStringGMT(entState.foundation.buildTime.timeRemaining * 1000, translateWithContext("countdown format", "m:ss")) : "";
+		resourceCarryingText.caption = entState.foundation.numBuilders ? sprintf(translate("%(time)s\n(%(number)s)"), {
+				"time": Engine.FormatMillisecondsIntoDateStringGMT(entState.foundation.buildTime.timeRemaining * 1000, translateWithContext("countdown format", "m:ss")),
+				"number": entState.foundation.numBuilders
+			}) : "";
 	}
 	else if (entState.resourceSupply && (!entState.resourceSupply.killBeforeGather || !entState.hitpoints))
 	{