diff --git a/sys/embunit/TestRunner.c b/sys/embunit/TestRunner.c
index d19f8e936c..bf448e7db0 100644
--- a/sys/embunit/TestRunner.c
+++ b/sys/embunit/TestRunner.c
@@ -99,7 +99,7 @@ void TestRunner_runTest(Test* test)
     Test_run(test, &result_);
 }
 
-void TestRunner_end(void)
+int TestRunner_end(void)
 {
     char buf[16];
     if (result_.failureCount) {
@@ -118,4 +118,6 @@ void TestRunner_end(void)
         stdimpl_print(buf);
         stdimpl_print(" tests)\n");
     }
+
+    return TestRunnerHadErrors;
 }
diff --git a/sys/include/embUnit/TestRunner.h b/sys/include/embUnit/TestRunner.h
index ba8b44a107..a469154c77 100644
--- a/sys/include/embUnit/TestRunner.h
+++ b/sys/include/embUnit/TestRunner.h
@@ -41,7 +41,7 @@ extern "C" {
 
 void TestRunner_start(void);
 void TestRunner_runTest(Test* test);
-void TestRunner_end(void);
+int TestRunner_end(void);
 
 extern int TestRunnerHadErrors;