diff --git a/sonoff/language/de-DE.h b/sonoff/language/de-DE.h
index 5901dad06..302c7e55e 100644
--- a/sonoff/language/de-DE.h
+++ b/sonoff/language/de-DE.h
@@ -493,8 +493,8 @@
 #define D_UNIT_KILOOHM "kOhm"
 #define D_UNIT_KILOWATTHOUR "kWh"
 #define D_UNIT_LUX "lx"
-#define D_UNIT_MICROGRAM_PER_CUBIC_METER "ug/m3"
-#define D_UNIT_MICROMETER "um"
+#define D_UNIT_MICROGRAM_PER_CUBIC_METER "µg/m3"
+#define D_UNIT_MICROMETER "µm"
 #define D_UNIT_MICROSECOND "µs"
 #define D_UNIT_MILLIAMPERE "mA"
 #define D_UNIT_MILLISECOND "ms"
@@ -503,7 +503,7 @@
 #define D_UNIT_PARTS_PER_DECILITER "ppd"
 #define D_UNIT_PARTS_PER_MILLION "ppm"
 #define D_UNIT_PRESSURE "hPa"
-#define D_UNIT_SECOND "sek"
+#define D_UNIT_SECOND "s"
 #define D_UNIT_SECTORS "Sektoren"
 #define D_UNIT_VA "VA"
 #define D_UNIT_VAR "VAr"