diff --git a/src/slic3r/GUI/Preferences.cpp b/src/slic3r/GUI/Preferences.cpp
index 0278e38fe..cce62bd20 100644
--- a/src/slic3r/GUI/Preferences.cpp
+++ b/src/slic3r/GUI/Preferences.cpp
@@ -156,10 +156,19 @@ wxBoxSizer *PreferencesDialog::create_item_language_combobox(
             language_name = wxString::FromUTF8("\xD0\xA0\xD1\x83\xD1\x81\xD1\x81\xD0\xBA\xD0\xB8\xD0\xB9");
         }
         else if (vlist[i] == wxLocale::GetLanguageInfo(wxLANGUAGE_CZECH)) {
-            language_name = wxString::FromUTF8("\xC4\x8D\x65\xC5\xA1\x74\x69\x6E\x61");
+            if (wxGetApp().app_config->get("language") == "ja_JP") {
+                language_name = wxString::FromUTF8("\x43\x7A\x65\x63\x68");
+            }
+            else{
+                language_name = wxString::FromUTF8("\xC4\x8D\x65\xC5\xA1\x74\x69\x6E\x61");
+            }
         }
         else if (vlist[i] == wxLocale::GetLanguageInfo(wxLANGUAGE_UKRAINIAN)) {
-            language_name = wxString::FromUTF8("\xD0\xA3\xD0\xBA\xD1\x80\xD0\xB0\xD1\x97\xD0\xBD\xD1\x81\xD1\x8C\xD0\xBA\xD0\xB0");
+            if (wxGetApp().app_config->get("language") == "ja_JP") {
+                language_name = wxString::FromUTF8("\x55\x6B\x72\x61\x69\x6E\x69\x61\x6E");
+            } else {
+                language_name = wxString::FromUTF8("\xD0\xA3\xD0\xBA\xD1\x80\xD0\xB0\xD1\x97\xD0\xBD\xD1\x81\xD1\x8C\xD0\xBA\xD0\xB0");
+            }
         }
         else if (vlist[i] == wxLocale::GetLanguageInfo(wxLANGUAGE_PORTUGUESE_BRAZILIAN)) {
             language_name = wxString::FromUTF8("\x50\x6F\x72\x74\x75\x67\x75\xC3\xAA\x73\x20\x28\x42\x72\x61\x73\x69\x6C\x29");