diff --git a/src/include/embetech/logger.h b/src/include/embetech/logger.h
index 84e6b30..55eb809 100644
--- a/src/include/embetech/logger.h
+++ b/src/include/embetech/logger.h
@@ -532,7 +532,7 @@ typedef struct {
 #    ifdef __cplusplus
 #        define LOGGER_HEADER_DESCR(lvl) (LOGGER_HeaderDescriptor{.level = lvl, .channel = LOGGER_HEADER "", .file = LOGGER_FILE "", .line = __LINE__})
 #    else
-#        define LOGGER_HEADER_DESCR(lvl) (LOGGER_HeaderDescriptor){.level = lvl, .channel = LOGGER_HEADER "", .file = LOGGER_FILE "", .line = __LINE__})
+#        define LOGGER_HEADER_DESCR(lvl) ((LOGGER_HeaderDescriptor){.level = lvl, .channel = LOGGER_HEADER "", .file = LOGGER_FILE "", .line = __LINE__})
 #    endif
 #else
 
diff --git a/tests/ut05_location/CMakeLists.txt b/tests/ut05_location/CMakeLists.txt
index eab40b0..19ab547 100644
--- a/tests/ut05_location/CMakeLists.txt
+++ b/tests/ut05_location/CMakeLists.txt
@@ -9,7 +9,7 @@ add_library(logger_test_proxy5_1 ${LOGGER_SOURCES})
 target_include_directories(logger_test_proxy5_1 PUBLIC ${LOGGER_INCLUDES})
 target_compile_definitions(logger_test_proxy5_1 PUBLIC LOGGER_HEADER_WITH_LOCATION=1 LOGGER_FILE="OVERRIDEN")
 
-add_executable(logger_ut05_1 ut05_1_location.cpp)
+add_executable(logger_ut05_1 ut05_1_location.cpp ut05_1_location.c)
 target_link_libraries(logger_ut05_1 PRIVATE logger_test_proxy5_1 logger_test_common)
 
 add_library(logger_test_proxy5_2 ${LOGGER_SOURCES})
@@ -35,6 +35,7 @@ add_dependencies(logger_ut logger_ut05_1)
 add_dependencies(logger_ut logger_ut05_2)
 add_dependencies(logger_ut logger_ut05_3)
 
+
 gtest_discover_tests(logger_ut05_1)
 gtest_discover_tests(logger_ut05_2)
 gtest_discover_tests(logger_ut05_3)
diff --git a/tests/ut05_location/ut05_1_location.c b/tests/ut05_location/ut05_1_location.c
new file mode 100644
index 0000000..c3f3ec5
--- /dev/null
+++ b/tests/ut05_location/ut05_1_location.c
@@ -0,0 +1,7 @@
+#include <embetech/logger.h>
+
+
+void log_test_message(void) {
+    #line 1
+    LOGGER_NOTICE("test message");
+}
\ No newline at end of file
diff --git a/tests/ut05_location/ut05_1_location.cpp b/tests/ut05_location/ut05_1_location.cpp
index d542b4e..2fadba9 100644
--- a/tests/ut05_location/ut05_1_location.cpp
+++ b/tests/ut05_location/ut05_1_location.cpp
@@ -1,9 +1,12 @@
-#include <gtest/gtest.h>
 #include <embetech/logger.h>
+#include <gtest/gtest.h>
 
 #include <sstream>
 
 
+extern "C" void log_test_message(void); // defined in ut05_1_location.c
+
+
 TEST(LOGGER, UT05_CodeLocation) {
     std::stringstream received;
     auto              clear_output = [&received]() {
@@ -17,9 +20,15 @@ TEST(LOGGER, UT05_CodeLocation) {
 
     char const* const msg = "test message";
     {
+        char const* const expected = "DEFAULT (N) [OVERRIDEN:1]: test message\n";
+
 #line 1
-        char const* const expected = "DEFAULT (N) [OVERRIDEN:2]: test message\n";
         LOGGER_NOTICE(msg);
+
+        EXPECT_EQ(expected, received.str());
+        clear_output();
+
+        log_test_message();
         EXPECT_EQ(expected, received.str());
         clear_output();
     }
@@ -31,5 +40,9 @@ TEST(LOGGER, UT05_CodeLocation) {
         LOGGER_WARNING(msg);
         EXPECT_EQ(expected, received.str());
         clear_output();
+
+        log_test_message();
+        EXPECT_EQ(expected, received.str());
+        clear_output();
     }
 }
\ No newline at end of file