diff --git a/frameworks/utest/source/unity_handler.cpp b/frameworks/utest/source/unity_handler.cpp
index 7a8c67f319..827014b391 100644
--- a/frameworks/utest/source/unity_handler.cpp
+++ b/frameworks/utest/source/unity_handler.cpp
@@ -18,17 +18,16 @@
 
  #include "utest/harness.h"
  #include "utest/stack_trace.h"
+ #include "utest/unity_handler.h"
 
 
-extern "C"
-void utest_unity_assert_failure()
+void utest_unity_assert_failure(void)
 {
     UTEST_LOG_FUNCTION();
     utest::v1::Harness::raise_failure(utest::v1::REASON_ASSERTION);
 }
 
-extern "C"
-void utest_unity_ignore_failure()
+void utest_unity_ignore_failure(void)
 {
     UTEST_LOG_FUNCTION();
     utest::v1::Harness::raise_failure(utest::v1::failure_reason_t(utest::v1::REASON_ASSERTION | utest::v1::REASON_IGNORE));
diff --git a/frameworks/utest/utest/unity_handler.h b/frameworks/utest/utest/unity_handler.h
index 5982ff88a9..4535785489 100644
--- a/frameworks/utest/utest/unity_handler.h
+++ b/frameworks/utest/utest/unity_handler.h
@@ -21,10 +21,18 @@
 
 #include <stdint.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /// this function is called from the unity module when an assertion failed.
-void utest_unity_assert_failure();
+void utest_unity_assert_failure(void);
 
 /// this function is called from the unity module when an assertion failed, but is ignored.
-void utest_unity_ignore_failure();
+void utest_unity_ignore_failure(void);
+
+#ifdef __cplusplus
+}
+#endif
 
 #endif // UTEST_UNITY_ASSERT_FAILURE_H