diff --git a/firmware/ethereum_tokens.c b/firmware/ethereum_tokens.c
index b7d89ec207..1c9bffe7aa 100644
--- a/firmware/ethereum_tokens.c
+++ b/firmware/ethereum_tokens.c
@@ -722,7 +722,7 @@ const TokenType tokens[TOKENS_COUNT] = {
 
 const TokenType *UnknownToken = (const TokenType *)1;
 
-const TokenType *tokenByChainAddress(uint8_t chain_id, const uint8_t *address)
+const TokenType *tokenByChainAddress(uint32_t chain_id, const uint8_t *address)
 {
 	if (!address) return 0;
 	for (int i = 0; i < TOKENS_COUNT; i++) {
diff --git a/firmware/ethereum_tokens.h b/firmware/ethereum_tokens.h
index 1b60e594e3..c8383f0a04 100644
--- a/firmware/ethereum_tokens.h
+++ b/firmware/ethereum_tokens.h
@@ -25,7 +25,7 @@
 #define TOKENS_COUNT 716
 
 typedef struct {
-    uint8_t chain_id;
+    uint32_t chain_id;
     const char * const address;
     const char * const ticker;
     int decimals;
@@ -35,6 +35,6 @@ extern const TokenType tokens[TOKENS_COUNT];
 
 extern const TokenType *UnknownToken;
 
-const TokenType *tokenByChainAddress(uint8_t chain_id, const uint8_t *address);
+const TokenType *tokenByChainAddress(uint32_t chain_id, const uint8_t *address);
 
 #endif