diff --git a/tests/test_env_detect.cpp b/tests/test_env_detect.cpp
index dae1ccc918e7..fc522f8e64a2 100644
--- a/tests/test_env_detect.cpp
+++ b/tests/test_env_detect.cpp
@@ -17,7 +17,7 @@ bool is_option_disabled(const char* options, const char* option)
             disabled = true;
             break;
         }
-        token = strtok(nullptr, ",");
+        token = strtok(NULL, ",");
     }
 
     free(options_copy);