diff --git a/test/test_parser2.hpp b/test/test_parser2.hpp
index ef58585..0706c1b 100644
--- a/test/test_parser2.hpp
+++ b/test/test_parser2.hpp
@@ -10,6 +10,10 @@
 #include <unordered_map>
 #include <unordered_set>
 
+#ifndef SEGMENT_NAME
+#error "SEGMENT_NAME must be defined"
+#endif
+
 // parser tests v2
 
 namespace {
@@ -304,7 +308,7 @@ void test_data_combinations(const std::vector<column>& input_data,
         return;
     }
 
-    unique_file_name f{"test_parser2"};
+    unique_file_name f{"test_parser2" + std::string{SEGMENT_NAME}};
     std::vector<std::vector<field>> expected_data;
     std::vector<std::string> header;
     std::vector<field> field_header;
diff --git a/test/test_parser2_segment1.cpp b/test/test_parser2_segment1.cpp
index 435d1f1..6f1ac7a 100644
--- a/test/test_parser2_segment1.cpp
+++ b/test/test_parser2_segment1.cpp
@@ -1,3 +1,4 @@
+#define SEGMENT_NAME "segment1"
 #include "test_parser2.hpp"
 
 TEST_CASE("parser test various cases version 2 segment 1") {
diff --git a/test/test_parser2_segment2.cpp b/test/test_parser2_segment2.cpp
index 70ffccd..5b5cc2c 100644
--- a/test/test_parser2_segment2.cpp
+++ b/test/test_parser2_segment2.cpp
@@ -1,3 +1,4 @@
+#define SEGMENT_NAME "segment2"
 #include "test_parser2.hpp"
 
 TEST_CASE("parser test various cases version 2 segment 2") {
diff --git a/test/test_parser2_segment3.cpp b/test/test_parser2_segment3.cpp
index 7818cdc..776f49a 100644
--- a/test/test_parser2_segment3.cpp
+++ b/test/test_parser2_segment3.cpp
@@ -1,3 +1,4 @@
+#define SEGMENT_NAME "segment3"
 #include "test_parser2.hpp"
 
 TEST_CASE("parser test various cases version 2 segment 3") {
diff --git a/test/test_parser2_segment4.cpp b/test/test_parser2_segment4.cpp
index e8caad5..4658337 100644
--- a/test/test_parser2_segment4.cpp
+++ b/test/test_parser2_segment4.cpp
@@ -1,3 +1,4 @@
+#define SEGMENT_NAME "segment4"
 #include "test_parser2.hpp"
 
 TEST_CASE("parser test various cases version 2 segment 4") {