diff --git a/argument.hpp b/argument.hpp
index c314006..9d0ab06 100644
--- a/argument.hpp
+++ b/argument.hpp
@@ -30,7 +30,7 @@
 
         static void usage(char** argv);
 
-        static constexpr auto true_string = "true";
+        static const std::string true_string;
         static const std::string empty_string;
 
     private:
diff --git a/control/argument.cpp b/control/argument.cpp
index 2852dee..d9b832d 100644
--- a/control/argument.cpp
+++ b/control/argument.cpp
@@ -82,6 +82,7 @@
 
 const char* ArgumentParser::optionstr = "ich?";
 
+const std::string ArgumentParser::true_string = "true";
 const std::string ArgumentParser::empty_string = "";
 
 }
diff --git a/cooling-type/argument.cpp b/cooling-type/argument.cpp
index f0a78c2..cfd8b25 100644
--- a/cooling-type/argument.cpp
+++ b/cooling-type/argument.cpp
@@ -21,9 +21,9 @@
 
 namespace phosphor
 {
-namespace cooling
+namespace fan
 {
-namespace type
+namespace util
 {
 
 ArgumentParser::ArgumentParser(int argc, char** argv)
@@ -99,6 +99,7 @@
 
 const char* ArgumentParser::optionstr = "p:d:e:aw?h";
 
+const std::string ArgumentParser::true_string = "true";
 const std::string ArgumentParser::empty_string = "";
 
 }
diff --git a/cooling-type/argument.hpp b/cooling-type/argument.hpp
deleted file mode 100644
index cc64891..0000000
--- a/cooling-type/argument.hpp
+++ /dev/null
@@ -1,41 +0,0 @@
-#pragma once
-
-#include <getopt.h>
-#include <map>
-#include <string>
-
-namespace phosphor
-{
-namespace cooling
-{
-namespace type
-{
-
-class ArgumentParser
-{
-    public:
-        ArgumentParser(int argc, char** argv);
-        ArgumentParser() = delete;
-        ArgumentParser(const ArgumentParser&) = delete;
-        ArgumentParser(ArgumentParser&&) = default;
-        ArgumentParser& operator=(const ArgumentParser&) = delete;
-        ArgumentParser& operator=(ArgumentParser&&) = default;
-        ~ArgumentParser() = default;
-        const std::string& operator[](const std::string& opt);
-
-        static void usage(char** argv);
-
-        static constexpr auto true_string = "true";
-        static const std::string empty_string;
-
-    private:
-        std::map<const std::string, std::string> arguments;
-
-        static const option options[];
-        static const char* optionstr;
-};
-
-}
-}
-}
-// vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
diff --git a/cooling-type/main.cpp b/cooling-type/main.cpp
index caa4e88..288f1b9 100644
--- a/cooling-type/main.cpp
+++ b/cooling-type/main.cpp
@@ -6,6 +6,7 @@
 #include "cooling_type.hpp"
 
 using namespace phosphor::cooling::type;
+using namespace phosphor::fan::util;
 using namespace phosphor::logging;
 
 int main(int argc, char* argv[])