diff --git a/esphome/components/esphome/ota/ota_esphome.cpp b/esphome/components/esphome/ota/ota_esphome.cpp
index 039950bee1..eaffbb0705 100644
--- a/esphome/components/esphome/ota/ota_esphome.cpp
+++ b/esphome/components/esphome/ota/ota_esphome.cpp
@@ -554,16 +554,14 @@ bool ESPHomeOTAComponent::perform_hash_auth_(HashBase *hasher, const std::string
   hasher->init();
 
   // Generate nonce seed bytes
-  uint32_t r1 = random_uint32();
-  uint32_to_bytes(r1, nonce_bytes);
+  uint32_to_bytes(random_uint32(), nonce_bytes);
 
   if (nonce_len == 4) {
     // MD5: 4 bytes from one random uint32
     hasher->add(nonce_bytes, 4);
   } else {
     // SHA256: 8 bytes from two random uint32s
-    uint32_t r2 = random_uint32();
-    uint32_to_bytes(r2, nonce_bytes + 4);
+    uint32_to_bytes(random_uint32(), nonce_bytes + 4);
     hasher->add(nonce_bytes, 8);
   }
   hasher->calculate();