diff --git a/sonoff/language/cs-CZ.h b/sonoff/language/cs-CZ.h
index 9a0b11062..e90797725 100644
--- a/sonoff/language/cs-CZ.h
+++ b/sonoff/language/cs-CZ.h
@@ -94,7 +94,7 @@
 #define D_FALSE "Nepravda"
 #define D_FILE "Soubor"
 #define D_FREE_MEMORY "Volná paměť"
-#define D_FREQUENCY "Frequency"
+#define D_FREQUENCY "Kmitočet"
 #define D_GAS "Plyn"
 #define D_GATEWAY "Výchozí brána"
 #define D_GROUP "Skupina"
@@ -128,7 +128,7 @@
 #define D_POWERUSAGE_APPARENT "Apparent Power"
 #define D_POWERUSAGE_REACTIVE "Reactive Power"
 #define D_PRESSURE "Tlak"
-#define D_PRESSUREATSEALEVEL "Tlak na úrovni hladiny moře"
+#define D_PRESSUREATSEALEVEL "Tlak na hladině moře"
 #define D_PROGRAM_FLASH_SIZE "Velikost paměti flash"
 #define D_PROGRAM_SIZE "Velikost programu"
 #define D_PROJECT "Projekt"