diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9de162f..e18f071 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required (VERSION 3.1)
 project(xdgcfg
-        VERSION 0.2.2
+        VERSION 0.2.3
         LANGUAGES CXX
 )
 
@@ -13,7 +13,8 @@ set(CMAKE_CXX_STANDARD 14)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
-set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -Wall")
+set(CMAKE_CXX_FLAGS
+    "${CMAKE_CXX_FLAGS} -Wall -pedantic -Wextra -g -Og -fno-omit-frame-pointer")
 
 include_directories(${LIBXDG_BASEDIR_INCLUDE_DIRS})
 include_directories(${LIBCONFIG_INCLUDE_DIRS})
diff --git a/src/example.cpp b/src/example.cpp
index 31f7f2c..090f47b 100644
--- a/src/example.cpp
+++ b/src/example.cpp
@@ -2,7 +2,7 @@
 #include <libconfig.h++>
 #include "xdgcfg.hpp"
 
-int main(int argc, char *argv[])
+int main()
 {
     xdgcfg config("test.cfg", "xdgcfg");
     config.set_verbose(true);
diff --git a/src/xdgcfg.cpp b/src/xdgcfg.cpp
index ea58b17..8307e3d 100644
--- a/src/xdgcfg.cpp
+++ b/src/xdgcfg.cpp
@@ -29,7 +29,7 @@ xdgcfg::xdgcfg(const string &filename, const string &subdir)
     _filepath /= filename;
 }
 
-const uint_fast8_t xdgcfg::read()
+uint_fast8_t xdgcfg::read()
 {
     try
     {
@@ -57,7 +57,7 @@ const uint_fast8_t xdgcfg::read()
     return 0;
 }
 
-const bool xdgcfg::write()
+bool xdgcfg::write()
 {
     try
     {
@@ -86,12 +86,12 @@ const fs::path xdgcfg::get_filepath() const
     return _filepath;
 }
 
-const void xdgcfg::set_verbose(bool verbose)
+void xdgcfg::set_verbose(bool verbose)
 {
     _verbose = verbose;
 }
 
-const bool xdgcfg::get_verbose() const
+bool xdgcfg::get_verbose() const
 {
     return _verbose;
 }
diff --git a/src/xdgcfg.hpp b/src/xdgcfg.hpp
index ab62d7f..33760f6 100644
--- a/src/xdgcfg.hpp
+++ b/src/xdgcfg.hpp
@@ -43,14 +43,14 @@ public:
      *
      *  @return 0 on success, 1 on I/O error, 2 on parse error.
      */
-    const uint_fast8_t read();
+    uint_fast8_t read();
 
     /*!
      *  @brief  Write the file
      *
      *  @return `true` on success
      */
-    const bool write();
+    bool write();
 
     /*!
      *  @brief  Returns a reference to the config as libconfig::Config
@@ -70,12 +70,12 @@ public:
     /*!
      *  @brief  Sets verbosity
      */
-    const void set_verbose(bool verbose);
+    void set_verbose(bool verbose);
 
     /*!
      *  @brief  Returns verbosity
      */
-    const bool get_verbose() const;
+    bool get_verbose() const;
 
 private:
     /*!