diff --git a/include/zeroerr/unittest.h b/include/zeroerr/unittest.h
index 742f54b6..9c8f2d85 100644
--- a/include/zeroerr/unittest.h
+++ b/include/zeroerr/unittest.h
@@ -10,6 +10,7 @@
 
 
 #include "zeroerr/internal/config.h"
+#include "zeroerr/assert.h"
 
 #include "zeroerr/internal/time.h"
 #include <iosfwd>
@@ -52,9 +53,10 @@ ZEROERR_SUPPRESS_COMMON_WARNINGS_PUSH
                           {__VA_ARGS__}));                                                   \
     inline void classname::funcname(ZEROERR_UNUSED(zeroerr::TestContext* _ZEROERR_TEST_CONTEXT))
 
-#define TEST_CASE_FIXTURE(fixture, ...)                                              \
-    ZEROERR_EXPAND(ZEROERR_CREATE_TEST_CLASS(fixture, ZEROERR_NAMEGEN(_zeroerr_class), \
-                              ZEROERR_NAMEGEN(_zeroerr_test_method), __VA_ARGS__))
+#define TEST_CASE_FIXTURE(fixture, ...)                                                                      \
+    ZEROERR_EXPAND(ZEROERR_CREATE_TEST_CLASS(fixture, ZEROERR_NAMEGEN(ZEROERR_CAT(fixture, _zeroerr_class)), \
+                                             ZEROERR_NAMEGEN(ZEROERR_CAT(fixture, _zeroerr_test_method)),    \
+                                             __VA_ARGS__))
 
 
 #define ZEROERR_HAVE_SAME_OUTPUT _ZEROERR_TEST_CONTEXT->save_output();
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 6e3307c0..63513a99 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -106,3 +106,5 @@ foreach(order IN ITEMS zeroerr_first stl_first)
     endif()
     add_test(NAME PrintCapabilities_${order} COMMAND print_capabilities_${order})
 endforeach()
+
+add_subdirectory(native_fixture_identity)
diff --git a/test/native_fixture_identity/CMakeLists.txt b/test/native_fixture_identity/CMakeLists.txt
new file mode 100644
index 00000000..a5ea7c99
--- /dev/null
+++ b/test/native_fixture_identity/CMakeLists.txt
@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.21)
+project(NativeFixtureIdentity LANGUAGES C CXX)
+include(CTest)
+include(CheckIPOSupported)
+check_ipo_supported(RESULT _ipo_supported)
+set(CMAKE_INTERPROCEDURAL_OPTIMIZATION ${_ipo_supported})
+set(_fixture_sources first.cpp second.cpp)
+if(NOT TARGET zeroerr)
+    add_subdirectory("${CMAKE_CURRENT_LIST_DIR}/../.." zeroerr EXCLUDE_FROM_ALL)
+    target_compile_definitions(zeroerr PRIVATE ZEROERR_NO_MAIN)
+    list(APPEND _fixture_sources main.cpp)
+endif()
+add_executable(fixture_identity ${_fixture_sources})
+target_link_libraries(fixture_identity PRIVATE zeroerr)
+add_test(NAME fixture_identity COMMAND fixture_identity --no-color)
diff --git a/test/native_fixture_identity/first.cpp b/test/native_fixture_identity/first.cpp
new file mode 100644
index 00000000..61d7ca50
--- /dev/null
+++ b/test/native_fixture_identity/first.cpp
@@ -0,0 +1,3 @@
+#include <zeroerr/unittest.h>
+struct FirstFixture { int value = 17; };
+TEST_CASE_FIXTURE(FirstFixture, "native.fixture.first") { REQUIRE(value == 17); }
diff --git a/test/native_fixture_identity/main.cpp b/test/native_fixture_identity/main.cpp
new file mode 100644
index 00000000..bace1a57
--- /dev/null
+++ b/test/native_fixture_identity/main.cpp
@@ -0,0 +1,2 @@
+#include <zeroerr/unittest.h>
+int main(int argc, char** argv) { return zeroerr::UnitTest().parseArgs(argc, const_cast<const char**>(argv)).run(); }
diff --git a/test/native_fixture_identity/second.cpp b/test/native_fixture_identity/second.cpp
new file mode 100644
index 00000000..45ed9ced
--- /dev/null
+++ b/test/native_fixture_identity/second.cpp
@@ -0,0 +1,3 @@
+#include <zeroerr/unittest.h>
+struct SecondFixture { char padding[128] = {}; int value = 91; };
+TEST_CASE_FIXTURE(SecondFixture, "native.fixture.second") { REQUIRE(value == 91); }
diff --git a/zeroerr.hpp b/zeroerr.hpp
index 94c1d30c..c83060d3 100644
--- a/zeroerr.hpp
+++ b/zeroerr.hpp
@@ -3292,6 +3292,7 @@ ZEROERR_SUPPRESS_COMMON_WARNINGS_POP
 
 
 
+
 #include <iosfwd>
 #include <functional>
 
@@ -3332,9 +3333,10 @@ ZEROERR_SUPPRESS_COMMON_WARNINGS_PUSH
                           {__VA_ARGS__}));                                                   \
     inline void classname::funcname(ZEROERR_UNUSED(zeroerr::TestContext* _ZEROERR_TEST_CONTEXT))
 
-#define TEST_CASE_FIXTURE(fixture, ...)                                              \
-    ZEROERR_EXPAND(ZEROERR_CREATE_TEST_CLASS(fixture, ZEROERR_NAMEGEN(_zeroerr_class), \
-                              ZEROERR_NAMEGEN(_zeroerr_test_method), __VA_ARGS__))
+#define TEST_CASE_FIXTURE(fixture, ...)                                                                      \
+    ZEROERR_EXPAND(ZEROERR_CREATE_TEST_CLASS(fixture, ZEROERR_NAMEGEN(ZEROERR_CAT(fixture, _zeroerr_class)), \
+                                             ZEROERR_NAMEGEN(ZEROERR_CAT(fixture, _zeroerr_test_method)),    \
+                                             __VA_ARGS__))
 
 
 #define ZEROERR_HAVE_SAME_OUTPUT _ZEROERR_TEST_CONTEXT->save_output();