diff --git a/src/test/fuzz/script_sign.cpp b/src/test/fuzz/script_sign.cpp
index 036b9ff3e49b..ba269beddd4e 100644
--- a/src/test/fuzz/script_sign.cpp
+++ b/src/test/fuzz/script_sign.cpp
@@ -67,7 +67,7 @@ FUZZ_TARGET(script_sign, .init = initialize_script_sign)
         }
         std::map<CPubKey, KeyOriginInfo> deserialized_hd_keypaths;
         try {
-            DeserializeHDKeypaths(serialized, key, hd_keypaths);
+            DeserializeHDKeypaths(serialized, key, deserialized_hd_keypaths);
         } catch (const std::ios_base::failure&) {
         }
         assert(hd_keypaths.size() >= deserialized_hd_keypaths.size());