diff --git a/esphome/components/tm1637/tm1637.cpp b/esphome/components/tm1637/tm1637.cpp
index ff8d5ea1bd..a21d2d438d 100644
--- a/esphome/components/tm1637/tm1637.cpp
+++ b/esphome/components/tm1637/tm1637.cpp
@@ -176,7 +176,7 @@ void TM1637Display::display() {
 
   // Write the data bytes
   if (this->inverted_) {
-    for (uint8_t i = this->length_ - 1; i >= 0; i--) {
+    for (int8_t i = this->length_ - 1; i >= 0; i--) {
       this->send_byte_(this->buffer_[i]);
     }
   } else {