diff --git a/core/src/com/unciv/ui/civilopedia/CivilopediaScreen.kt b/core/src/com/unciv/ui/civilopedia/CivilopediaScreen.kt
index 1a09ef6dff..101eee1068 100644
--- a/core/src/com/unciv/ui/civilopedia/CivilopediaScreen.kt
+++ b/core/src/com/unciv/ui/civilopedia/CivilopediaScreen.kt
@@ -221,7 +221,8 @@ class CivilopediaScreen(
         buttonTable.defaults().pad(10f)
 
         var currentX = 10f  // = padLeft
-        for (categoryKey in categoryToEntries.keys) {
+        for ((categoryKey, entries) in categoryToEntries) {
+            if (entries.isEmpty()) continue
             val icon = if (categoryKey.headerIcon.isNotEmpty()) ImageGetter.getImage(categoryKey.headerIcon) else null
             val button = IconTextButton(categoryKey.label, icon)
             button.addTooltip(categoryKey.key)