diff --git a/src/main/scala/li/cil/oc/util/Tooltip.scala b/src/main/scala/li/cil/oc/util/Tooltip.scala
index 30db99a86..d65e79bfe 100644
--- a/src/main/scala/li/cil/oc/util/Tooltip.scala
+++ b/src/main/scala/li/cil/oc/util/Tooltip.scala
@@ -17,6 +17,7 @@ object Tooltip {
     if (!Localization.canLocalize(Settings.namespace + "tooltip." + name)) return Seq.empty[String]
     val tooltip = Localization.localizeImmediately("tooltip." + name).
       format(args.map(_.toString): _*)
+    if (font == null) return tooltip.lines.toList // Some mods request tooltips before font renderer is available.
     val isSubTooltip = name.contains(".")
     val shouldShorten = (isSubTooltip || font.getStringWidth(tooltip) > maxWidth) && !KeyBindings.showExtendedTooltips
     if (shouldShorten) {