diff --git a/lib/subghz/protocols/dickert_mahs.c b/lib/subghz/protocols/dickert_mahs.c
index 4691e3423..3f614412b 100644
--- a/lib/subghz/protocols/dickert_mahs.c
+++ b/lib/subghz/protocols/dickert_mahs.c
@@ -288,8 +288,9 @@ void subghz_protocol_decoder_dickert_mahs_feed(void* context, bool level, uint32
             instance->decoder.decode_count_bit = 0;
         }
 
-        if((!level) && (duration > 10 * subghz_protocol_dickert_mahs_const.te_short)) {
-            //Found header DICKERT_MAHS
+        if((!level) && (DURATION_DIFF(duration, subghz_protocol_dickert_mahs_const.te_long * 50) <
+                        subghz_protocol_dickert_mahs_const.te_delta * 70)) {
+            //Found header DICKERT_MAHS 44k us
             instance->decoder.parser_step = DickertMAHSDecoderStepInitial;
         }
         break;