diff --git a/Core/Src/app_gui.c b/Core/Src/app_gui.c
index 79f22d6..241a153 100644
--- a/Core/Src/app_gui.c
+++ b/Core/Src/app_gui.c
@@ -15,6 +15,7 @@
 #include "ufb/fb_text.h"
 #include "ufb/fb_7seg.h"
 #include "app_safety.h"
+#include "ufb/utf8.h"
 
 #define MAX_TEMP 400
 
@@ -228,8 +229,10 @@ static void input_sound_effect()
 // ------------- home screen ----------------
 
 static const char* main_menu_opts[] = {
-    "Manual mode",
-    "Calibration",
+    "Ruční režim",
+    "Kalibrace",
+    "Programy",
+    "Diagnostika",
     NULL
 };
 
@@ -308,8 +311,8 @@ static void screen_manual(GuiEvent event)
 // ---------------------------
 
 static const char* manual_menu_opts[] = {
-        "Close menu",
-        "Exit manual",
+        "Zrušit",
+        "Hlavní menu",
         NULL
 };
 
@@ -357,7 +360,7 @@ static void screen_menu(GuiEvent event, const char **options, menu_callback_t cb
         case GUI_EVENT_SCREEN_TICK:
             // long text sliding animation
             if (tickNow - menu->change_time >= pdMS_TO_TICKS(500)) {
-                const uint32_t textlen = strlen(options[menu->pos]) * 6;
+                const uint32_t textlen = utf8_strlen(options[menu->pos]) * 6;
                 if (textlen >= FBW - 2) {
                     if (textlen - menu->text_slide > FBW - 1) {
                         menu->text_slide += 1;
diff --git a/Lib/ufb/Src/font_57.inc.c b/Lib/ufb/Src/font_57.inc.c
index 79f9ea2..3c5981b 100644
--- a/Lib/ufb/Src/font_57.inc.c
+++ b/Lib/ufb/Src/font_57.inc.c
@@ -113,4 +113,8 @@ static const struct utf_glyph5x PROGMEM font57_extra[] = {
     {.utf={.symbol="🔙"}, {{0x04, 0x4e, 0x55, 0x44, 0x38}}},
     {.utf={.symbol="▶"}, {{0x7f, 0x3e, 0x1c, 0x08, 0x00}}},
     {.utf={.symbol="◀"}, {{0x00, 0x08, 0x1c, 0x3e, 0x7f}}},
+    {.utf={.symbol="č"}, {{0x38, 0x45, 0x46, 0x45, 0x20}}},
+    {.utf={.symbol="š"}, {{0x48, 0x55, 0x56, 0x55, 0x20}}},
+    {.utf={.symbol="í"}, {{0x00, 0x44, 0x7d, 0x41, 0x00}}},
+    {.utf={.symbol="ž"}, {{0x44, 0x65, 0x56, 0x4d, 0x44}}},
 };
diff --git a/Lib/ufb/Src/fontedit_57.c b/Lib/ufb/Src/fontedit_57.c
index 4742f39..3a0b007 100644
--- a/Lib/ufb/Src/fontedit_57.c
+++ b/Lib/ufb/Src/fontedit_57.c
@@ -895,6 +895,38 @@ const char *font_extras[] = {
     "  ###",
     "   ##",
     "    #",
+    // 99 "č"
+    " x x ",
+    "  x  ",
+    " ### ",
+    "#    ",
+    "#    ",
+    "#   #",
+    " ### ",
+    // 115 "š"
+    " x x ",
+    "  x  ",
+    " ### ",
+    "#    ",
+    " ### ",
+    "    #",
+    "#### ",
+    // 105 "i"
+    "  #x ",
+    "     ",
+    " ##  ",
+    "  #  ",
+    "  #  ",
+    "  #  ",
+    " ### ",
+    // 122 "z"
+    " x x ",
+    "  x  ",
+    "#####",
+    "   # ",
+    "  #  ",
+    " #   ",
+    "#####",
 };
 
 const char *font_extras_utf[] = {
@@ -904,16 +936,20 @@ const char *font_extras_utf[] = {
     "↓",
     "←",
     "→",
-    "⏰", // clock
+    "⏱", // clock
     "⌛",
     "☸",
     "⏎",
     "🌡",
     "°",
     "μ",
-    "🔙", // back
+    "⎌", // back
     "▶",
     "◀",
+    "č",
+    "š",
+    "í",
+    "ž",
 };
 
 #include "fontedit_render.inc.c"
diff --git a/Makefile b/Makefile
index ccc629c..a07d26a 100644
--- a/Makefile
+++ b/Makefile
@@ -253,3 +253,6 @@ flash-pico: $(BUILD_DIR)/$(TARGET).bin
 
 analyze: $(BUILD_DIR)/$(TARGET).elf
 	python -m elf_size_analyze --rom $<
+
+fonts:
+	make -C Lib/ufb fonts
\ No newline at end of file