diff --git a/src/rpc/common/Types.hpp b/src/rpc/common/Types.hpp
index ccdea346..06bf68f1 100644
--- a/src/rpc/common/Types.hpp
+++ b/src/rpc/common/Types.hpp
@@ -94,7 +94,7 @@ struct ReturnType {
      * @param warnings The warnings generated by the RPC call
      */
     ReturnType(std::expected<boost::json::value, Status> result, boost::json::array warnings = {})
-        : result{std::move(result)}, warnings{std::move(warnings)}
+        : result{std::move(result)}, warnings(std::move(warnings))
     {
     }
 
diff --git a/tests/unit/rpc/common/TypesTests.cpp b/tests/unit/rpc/common/TypesTests.cpp
index e36ef670..5e886c6a 100644
--- a/tests/unit/rpc/common/TypesTests.cpp
+++ b/tests/unit/rpc/common/TypesTests.cpp
@@ -20,6 +20,8 @@
 #include "rpc/Errors.hpp"
 #include "rpc/common/Types.hpp"
 
+#include <boost/json/array.hpp>
+#include <boost/json/value.hpp>
 #include <gtest/gtest.h>
 
 #include <expected>
@@ -34,3 +36,46 @@ TEST(MaybeErrorTest, OperatorEquals)
     EXPECT_EQ(MaybeError{std::unexpected{Status{"Error"}}}, MaybeError{std::unexpected{Status{"Error"}}});
     EXPECT_NE(MaybeError{std::unexpected{Status{"Error"}}}, MaybeError{std::unexpected{Status{"Another_error"}}});
 }
+
+TEST(ReturnTypeTests, Constructor)
+{
+    boost::json::value const value{42};
+
+    {
+        ReturnType const r{value};
+        ASSERT_TRUE(r.result);
+        EXPECT_EQ(r.result.value(), value);
+        EXPECT_EQ(r.warnings, boost::json::array{});
+    }
+
+    {
+        boost::json::array const warnings{1, 2, 3};
+        ReturnType const r{value, warnings};
+        ASSERT_TRUE(r.result);
+        EXPECT_EQ(r.result.value(), value);
+        EXPECT_EQ(r.warnings, warnings);
+    }
+
+    {
+        Status const status{"Error"};
+
+        ReturnType const r{std::unexpected{status}};
+        ASSERT_FALSE(r.result);
+        EXPECT_EQ(r.result.error(), status);
+        EXPECT_EQ(r.warnings, boost::json::array{});
+    }
+}
+
+TEST(ReturnTypeTests, operatorBool)
+{
+    {
+        boost::json::value const value{42};
+        ReturnType const r{value};
+        EXPECT_TRUE(r);
+    }
+    {
+        Status const status{"Error"};
+        ReturnType const r{std::unexpected{status}};
+        EXPECT_FALSE(r);
+    }
+}