diff --git a/language/cz_CZ/about.html b/language/cs_CZ/about.html
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rename from language/cz_CZ/about.html
rename to language/cs_CZ/about.html
diff --git a/language/cz_CZ/admin.lang.php b/language/cs_CZ/admin.lang.php
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rename from language/cz_CZ/admin.lang.php
rename to language/cs_CZ/admin.lang.php
diff --git a/language/cz_CZ/common.lang.php b/language/cs_CZ/common.lang.php
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rename from language/cz_CZ/common.lang.php
rename to language/cs_CZ/common.lang.php
diff --git a/language/cz_CZ/index.php b/language/cs_CZ/index.php
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rename from language/cz_CZ/index.php
rename to language/cs_CZ/index.php
diff --git a/language/cz_CZ/install.lang.php b/language/cs_CZ/install.lang.php
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rename from language/cz_CZ/install.lang.php
rename to language/cs_CZ/install.lang.php
diff --git a/language/cz_CZ/iso.txt b/language/cs_CZ/iso.txt
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rename from language/cz_CZ/iso.txt
rename to language/cs_CZ/iso.txt
diff --git a/language/cz_CZ/upgrade.lang.php b/language/cs_CZ/upgrade.lang.php
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rename from language/cz_CZ/upgrade.lang.php
rename to language/cs_CZ/upgrade.lang.php