diff --git a/unit_tests/util/io.cpp b/unit_tests/util/io.cpp
index 4cc3a688b..d9f86d0e7 100644
--- a/unit_tests/util/io.cpp
+++ b/unit_tests/util/io.cpp
@@ -17,7 +17,6 @@ const static std::string IO_TOO_SMALL_FILE = "file_too_small_test_io.tmp";
 const static std::string IO_CORRUPT_FINGERPRINT_FILE = "corrupt_fingerprint_file_test_io.tmp";
 const static std::string IO_INCOMPATIBLE_FINGERPRINT_FILE =
     "incompatible_fingerprint_file_test_io.tmp";
-const static std::string IO_TEXT_FILE = "plain_text_file.tmp";
 
 using namespace osrm;