diff --git a/esphome/components/cse7766/cse7766.cpp b/esphome/components/cse7766/cse7766.cpp
index 48240464b3..3907c195d0 100644
--- a/esphome/components/cse7766/cse7766.cpp
+++ b/esphome/components/cse7766/cse7766.cpp
@@ -43,7 +43,7 @@ bool CSE7766Component::check_byte_() {
   uint8_t index = this->raw_data_index_;
   uint8_t byte = this->raw_data_[index];
   if (index == 0) {
-    return !((byte != 0x55) && ((byte & 0xF0) != 0xF0) && (byte != 0xAA));
+    return (byte == 0x55) || ((byte & 0xF0) == 0xF0) || (byte == 0xAA);
   }
 
   if (index == 1) {