diff --git a/libevmasm/Assembly.cpp b/libevmasm/Assembly.cpp
index 6b0c73fcb..dbb56b0ad 100644
--- a/libevmasm/Assembly.cpp
+++ b/libevmasm/Assembly.cpp
@@ -518,11 +518,21 @@ bool Assembly::addAssemblyItemsFromJSON(Json::Value const& _code)
 	return true;
 }
 
-bool Assembly::loadFromAssemblyJSON(Json::Value const& _json)
+bool Assembly::loadFromAssemblyJSON(Json::Value const& _json, bool _loadSources /* = true */)
 {
 	if (!_json[".code"].isArray())
 		return false;
 	bool result{true};
+
+	if (_loadSources)
+	{
+		vector<string> sourceList;
+		if (_json.isMember("sourceList"))
+			for (auto const& it: _json["sourceList"])
+				sourceList.emplace_back(it.asString());
+		setSources(sourceList);
+	}
+
 	addAssemblyItemsFromJSON(_json[".code"]);
 	if (_json[".auxdata"].isString())
 		this->m_auxiliaryData = fromHex(_json[".auxdata"].asString());
@@ -538,7 +548,7 @@ bool Assembly::loadFromAssemblyJSON(Json::Value const& _json)
 		{
 			shared_ptr<Assembly> subassembly = make_shared<Assembly>();
 			subassembly->setSources(this->sources());
-			result &= subassembly->loadFromAssemblyJSON(code);
+			result &= subassembly->loadFromAssemblyJSON(code, false);
 			this->m_subs.emplace_back(subassembly);
 		}
 	}
diff --git a/libevmasm/Assembly.h b/libevmasm/Assembly.h
index 14fdc98c4..dcf76d4f3 100644
--- a/libevmasm/Assembly.h
+++ b/libevmasm/Assembly.h
@@ -39,6 +39,7 @@
 #include <sstream>
 #include <memory>
 #include <map>
+#include <utility>
 
 namespace solidity::evmasm
 {
@@ -159,7 +160,7 @@ public:
 		bool _includeSourceList = true
 	) const;
 
-	bool loadFromAssemblyJSON(Json::Value const& _json);
+	bool loadFromAssemblyJSON(Json::Value const& _json, bool _loadSources = true);
 
 	/// Mark this assembly as invalid. Calling ``assemble`` on it will throw.
 	void markAsInvalid() { m_invalid = true; }
@@ -168,7 +169,7 @@ public:
 	size_t encodeSubPath(std::vector<size_t> const& _subPath);
 
 	void setSources(std::vector<std::shared_ptr<std::string const>> _sources) {
-		m_sources = _sources;
+		m_sources = std::move(_sources);
 	}
 
 	void setSources(std::vector<std::string> const& _sources) {
diff --git a/libsolidity/interface/CompilerStack.cpp b/libsolidity/interface/CompilerStack.cpp
index cd8a91472..58c55459e 100644
--- a/libsolidity/interface/CompilerStack.cpp
+++ b/libsolidity/interface/CompilerStack.cpp
@@ -685,20 +685,14 @@ bool CompilerStack::compile(State _stopAfter)
 		optimiserSettings.runJumpdestRemover = m_optimiserSettings.runJumpdestRemover;
 		optimiserSettings.runPeephole = m_optimiserSettings.runPeephole;
 
-		vector<string> sourceList;
-		if (m_evmAssemblyJson[evmAssemblyJsonSource].isMember("sourceList"))
-			for (auto const& it: m_evmAssemblyJson[evmAssemblyJsonSource]["sourceList"])
-				sourceList.emplace_back(it.asString());
-
 		m_contracts[evmAssemblyJsonSource].evmAssembly = make_shared<evmasm::Assembly>(evmAssemblyJsonSource);
-		m_contracts[evmAssemblyJsonSource].evmAssembly->setSources(sourceList);
 		m_contracts[evmAssemblyJsonSource].evmAssembly->loadFromAssemblyJSON(m_evmAssemblyJson[evmAssemblyJsonSource]);
 		m_contracts[evmAssemblyJsonSource].evmAssembly->optimise(optimiserSettings);
 		m_contracts[evmAssemblyJsonSource].object = m_contracts[evmAssemblyJsonSource].evmAssembly->assemble();
 
 		m_contracts[evmAssemblyJsonSource].evmRuntimeAssembly = make_shared<evmasm::Assembly>(evmAssemblyJsonSource);
-		m_contracts[evmAssemblyJsonSource].evmRuntimeAssembly->setSources(sourceList);
-		m_contracts[evmAssemblyJsonSource].evmRuntimeAssembly->loadFromAssemblyJSON(m_evmAssemblyJson[evmAssemblyJsonSource][".data"]["0"]);
+		m_contracts[evmAssemblyJsonSource].evmRuntimeAssembly->setSources(m_contracts[evmAssemblyJsonSource].evmAssembly->sources());
+		m_contracts[evmAssemblyJsonSource].evmRuntimeAssembly->loadFromAssemblyJSON(m_evmAssemblyJson[evmAssemblyJsonSource][".data"]["0"], false);
 		m_contracts[evmAssemblyJsonSource].evmRuntimeAssembly->optimise(optimiserSettings);
 		m_contracts[evmAssemblyJsonSource].runtimeObject = m_contracts[evmAssemblyJsonSource].evmRuntimeAssembly->assemble();
 	}