diff --git a/test/options.cpp b/test/options.cpp
index ccf3ef7ec..2c1d78d68 100644
--- a/test/options.cpp
+++ b/test/options.cpp
@@ -19,30 +19,30 @@
 #include <iterator>
 
 options::options(int argc, const char* const argv[])
-    :_options(argv + 1, argv + argc)
-    ,_which_test("")
-    ,_quiet(_options.count("-q") != 0)
-    ,_help(_options.count("-h") != 0 || _options.count("--help"))
+    :mOptions(argv + 1, argv + argc)
+    ,mWhichTest("")
+    ,mQuiet(mOptions.count("-q") != 0)
+    ,mHelp(mOptions.count("-h") != 0 || mOptions.count("--help"))
 {
-    _options.erase("-q");
-    _options.erase("-h");
-    _options.erase("--help");
-    if (! _options.empty()) {
-        _which_test = *_options.rbegin();
+    mOptions.erase("-q");
+    mOptions.erase("-h");
+    mOptions.erase("--help");
+    if (! mOptions.empty()) {
+        mWhichTest = *mOptions.rbegin();
     }
 }
 
 bool options::quiet() const
 {
-    return _quiet;
+    return mQuiet;
 }
 
 bool options::help() const
 {
-    return _help;
+    return mHelp;
 }
 
 const std::string& options::which_test() const
 {
-    return _which_test;
+    return mWhichTest;
 }
diff --git a/test/options.h b/test/options.h
index 5a7e6b751..ff2d2fa63 100644
--- a/test/options.h
+++ b/test/options.h
@@ -42,10 +42,10 @@ private:
     const options& operator =(const options& non_assign);
 
 private:
-    std::set<std::string> _options;
-    std::string _which_test;
-    const bool _quiet;
-    const bool _help;
+    std::set<std::string> mOptions;
+    std::string mWhichTest;
+    const bool mQuiet;
+    const bool mHelp;
 };
 
 #endif