diff --git a/src/rpc/output_script.cpp b/src/rpc/output_script.cpp
index 744f8098147..a980c609e80 100644
--- a/src/rpc/output_script.cpp
+++ b/src/rpc/output_script.cpp
@@ -273,7 +273,7 @@ static RPCHelpMan deriveaddresses()
 
             UniValue addresses(UniValue::VARR);
 
-            for (int i = range_begin; i <= range_end; ++i) {
+            for (int64_t i = range_begin; i <= range_end; ++i) {
                 FlatSigningProvider provider;
                 std::vector<CScript> scripts;
                 if (!desc->Expand(i, key_provider, scripts, provider)) {