diff --git a/src/activities/lang/resource/content-cs.json b/src/activities/lang/resource/content-cs.json
new file mode 100644
index 000000000..13e02ed54
--- /dev/null
+++ b/src/activities/lang/resource/content-cs.json
@@ -0,0 +1,4 @@
+{
+    "alphabet.ogg": "abeceda",
+    "angel.ogg": "anděl"
+}
\ No newline at end of file