diff --git a/src/libexpr-c/nix_api_value.cc b/src/libexpr-c/nix_api_value.cc
index 26ae194d9..93e7db5c0 100644
--- a/src/libexpr-c/nix_api_value.cc
+++ b/src/libexpr-c/nix_api_value.cc
@@ -448,7 +448,7 @@ void nix_list_builder_free(ListBuilder * list_builder)
 #endif
 }
 
-nix_err nix_make_list(nix_c_context * context, EvalState * s, ListBuilder * list_builder, Value * value)
+nix_err nix_make_list(nix_c_context * context, ListBuilder * list_builder, Value * value)
 {
     if (context)
         context->last_err_code = NIX_OK;
diff --git a/src/libexpr-c/nix_api_value.h b/src/libexpr-c/nix_api_value.h
index d80414fe8..c42581278 100644
--- a/src/libexpr-c/nix_api_value.h
+++ b/src/libexpr-c/nix_api_value.h
@@ -347,7 +347,7 @@ nix_err nix_init_external(nix_c_context * context, Value * value, ExternalValue
  * @param[out] value Nix value to modify
  * @return error code, NIX_OK on success.
  */
-nix_err nix_make_list(nix_c_context * context, EvalState * s, ListBuilder * list_builder, Value * value);
+nix_err nix_make_list(nix_c_context * context, ListBuilder * list_builder, Value * value);
 
 /** @brief Create a list builder
  * @param[out] context Optional, stores error information
diff --git a/tests/unit/libexpr/nix_api_value.cc b/tests/unit/libexpr/nix_api_value.cc
index fd7c91a7d..20c874f22 100644
--- a/tests/unit/libexpr/nix_api_value.cc
+++ b/tests/unit/libexpr/nix_api_value.cc
@@ -78,7 +78,7 @@ TEST_F(nix_api_expr_test, nix_build_and_init_list)
     Value * intValue = nix_alloc_value(nullptr, state);
     nix_init_int(nullptr, intValue, 42);
     nix_list_builder_insert(nullptr, builder, 0, intValue);
-    nix_make_list(nullptr, state, builder, value);
+    nix_make_list(nullptr, builder, value);
     nix_list_builder_free(builder);
 
     ASSERT_EQ(42, nix_get_int(nullptr, nix_get_list_byidx(nullptr, value, state, 0)));