diff --git a/processor/pc/ProcedureManager.cpp b/processor/pc/ProcedureManager.cpp
index e48456f..8d89dad 100644
--- a/processor/pc/ProcedureManager.cpp
+++ b/processor/pc/ProcedureManager.cpp
@@ -2,6 +2,17 @@
 
 ProcedureManager::ProcedureManager() {}
 
+struct ProcedureCallHeader {
+	uint64_t rd;
+	int32_t method;
+	uint32_t len;
+};
+
+struct ProcedureReturnHeader {
+	uint64_t rd;
+	uint32_t len;
+};
+
 void ProcedureManager::handleCall(FILE *in, FILE *out) const {
 	ProcedureCallHeader header;
 	auto ptr = reinterpret_cast<byte*>(&header);
@@ -18,6 +29,10 @@ void ProcedureManager::handleCall(FILE *in, FILE *out) const {
 	delete[] buf;
 	if (procedures.count(header.method)) {
 		auto res = procedures.at(header.method)(bb);
+		ProcedureReturnHeader rh;
+		rh.rd = header.rd;
+		rh.len = header.len;
+		fwrite(&rh, 1, sizeof(rh), out);
 		res.writeTo(out);
 	}
 }
diff --git a/processor/pc/ProcedureManager.h b/processor/pc/ProcedureManager.h
index db87424..29d194c 100644
--- a/processor/pc/ProcedureManager.h
+++ b/processor/pc/ProcedureManager.h
@@ -31,12 +31,6 @@ struct FuncArgTraits<ReturnType(ClassType::*)(Args...) const> {
 	using type = std::tuple<Args...>;
 };
 
-struct ProcedureCallHeader {
-	uint64_t rd;
-	int32_t method;
-	uint32_t len;
-};
-
 }
 
 class ProcedureManager {