diff --git a/lang/gpxsee_cs.ts b/lang/gpxsee_cs.ts
index c31dc3c6..357b4ff1 100644
--- a/lang/gpxsee_cs.ts
+++ b/lang/gpxsee_cs.ts
@@ -1144,12 +1144,12 @@
     <message>
         <location filename="../src/GUI/optionsdialog.cpp" line="118"/>
         <source>Input</source>
-        <translation type="unfinished"></translation>
+        <translation>Vstup</translation>
     </message>
     <message>
         <location filename="../src/GUI/optionsdialog.cpp" line="120"/>
         <source>Output</source>
-        <translation type="unfinished"></translation>
+        <translation>Výstup</translation>
     </message>
     <message>
         <location filename="../src/GUI/optionsdialog.cpp" line="127"/>