diff --git a/src/experiments/ecos_kernel_test/campaign.cc b/src/experiments/ecos_kernel_test/campaign.cc
index 0a109720..1f2f7b67 100644
--- a/src/experiments/ecos_kernel_test/campaign.cc
+++ b/src/experiments/ecos_kernel_test/campaign.cc
@@ -43,10 +43,11 @@ bool EcosKernelTestCampaign::readMemoryMap(fail::MemoryMap &mm, char const * con
 	return (count > 0);
 }
 
-bool EcosKernelTestCampaign::writeTraceInfo(unsigned instr_counter, unsigned timeout, unsigned lowest_addr, unsigned highest_addr) {
-	ofstream ti(filename_traceinfo().c_str(), ios::out);
+bool EcosKernelTestCampaign::writeTraceInfo(unsigned instr_counter, unsigned timeout, unsigned lowest_addr, unsigned highest_addr,
+	const std::string& variant, const std::string& benchmark) {
+	ofstream ti(filename_traceinfo(variant, benchmark).c_str(), ios::out);
 	if (!ti.is_open()) {
-		cout << "failed to open " << filename_traceinfo() << endl;
+		cout << "failed to open " << filename_traceinfo(variant, benchmark) << endl;
 		return false;
 	}
 	ti << instr_counter << endl << timeout << endl << lowest_addr << endl << highest_addr << endl;
diff --git a/src/experiments/ecos_kernel_test/campaign.hpp b/src/experiments/ecos_kernel_test/campaign.hpp
index beff2f19..d6b25389 100644
--- a/src/experiments/ecos_kernel_test/campaign.hpp
+++ b/src/experiments/ecos_kernel_test/campaign.hpp
@@ -49,7 +49,7 @@ public:
 		count_exp(0), count_exp_jobs(0), count_known(0), count_known_jobs(0) {}
 	virtual bool run();
 	static bool readMemoryMap(fail::MemoryMap &mm, char const * const filename);
-	static bool writeTraceInfo(unsigned instr_counter, unsigned timeout, unsigned lowest_addr, unsigned highest_addr);
+	static bool writeTraceInfo(unsigned instr_counter, unsigned timeout, unsigned lowest_addr, unsigned highest_addr, const std::string& variant = "", const std::string& benchmark = "");
 	static bool readTraceInfo(unsigned &instr_counter, unsigned &timeout, unsigned &lowest_addr, unsigned &highest_addr, const std::string& variant = "", const std::string& benchmark = "");
 	static std::string filename_memorymap(const std::string& variant = "", const std::string& benchmark = "");
 	static std::string filename_state(unsigned instr_offset, const std::string& variant = "", const std::string& benchmark = "");
diff --git a/src/experiments/ecos_kernel_test/experiment.cc b/src/experiments/ecos_kernel_test/experiment.cc
index bdfe30ed..724593df 100644
--- a/src/experiments/ecos_kernel_test/experiment.cc
+++ b/src/experiments/ecos_kernel_test/experiment.cc
@@ -252,7 +252,8 @@ bool EcosKernelTestExperiment::performTrace(guest_address_t addr_entry, guest_ad
 	log << dec << "elapsed simulated time (plus safety margin): " << (estimated_timeout * TIMER_GRANULARITY / 1000000.0) << "s" << endl;
 
 	// save these values for experiment STEP 3
-	EcosKernelTestCampaign::writeTraceInfo(instr_counter, estimated_timeout, lowest_addr, highest_addr);
+	EcosKernelTestCampaign::writeTraceInfo(instr_counter, estimated_timeout,
+		lowest_addr, highest_addr, m_variant, m_benchmark);
 
 	simulator.removeFlow(&tp);