diff --git a/core/src/com/unciv/ui/utils/KeyPressDispatcher.kt b/core/src/com/unciv/ui/utils/KeyPressDispatcher.kt
index 0ff608f2ac..03e1d5c35c 100644
--- a/core/src/com/unciv/ui/utils/KeyPressDispatcher.kt
+++ b/core/src/com/unciv/ui/utils/KeyPressDispatcher.kt
@@ -42,7 +42,7 @@ data class KeyCharAndCode(val char: Char, val code: Int) {
         return when {
             char == Char.MIN_VALUE -> fixedKeysToString(code)
             this == ESC -> "ESC"
-            char < ' ' -> "Ctrl-" + Char(char.code+64)
+            char < ' ' -> "Ctrl-" + (char.toCode() + 64).makeChar()
             else -> "\"$char\""
         }
     }
@@ -63,16 +63,18 @@ data class KeyCharAndCode(val char: Char, val code: Int) {
         /** Guaranteed to be ignored by [KeyPressDispatcher.set] and never to be generated for an actual event, used as fallback to ensure no action is taken */
         val UNKNOWN = KeyCharAndCode(Input.Keys.UNKNOWN)
 
+        // Kludges because we got crashes: java.lang.NoSuchMethodError: 'int kotlin.CharCodeKt.access$getCode$p(char)'  
+        private fun Char.toCode() =
+            try { code } catch (ex: Throwable) { null }
+                ?: try { @Suppress("DEPRECATION") toInt() } catch (ex: Throwable) { null }
+                ?: 0
+        private fun Int.makeChar() =
+            try { Char(this) } catch (ex: Throwable) { null }
+                ?: try { toChar() } catch (ex: Throwable) { null }
+                ?: Char.MIN_VALUE
+
         /** mini-factory for control codes - case insensitive */
-        fun ctrl(letter: Char) = KeyCharAndCode(Char(
-            try {
-                letter.code and 31
-            } catch (ex: NoSuchMethodError) {
-                // Seems to happen on some Ubuntu systems
-                @Suppress("DEPRECATION")
-                letter.toInt() and 31
-            }
-        ), 0)
+        fun ctrl(letter: Char) = KeyCharAndCode((letter.toCode() and 31).makeChar(),0)
 
         /** mini-factory for control codes from keyCodes */
         fun ctrlFromCode(keyCode: Int): KeyCharAndCode {