diff --git a/CMakeLists.txt b/CMakeLists.txt
index 26b94d8..90f145b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,6 +9,15 @@ project(Tyro)
 
 include_directories(${PROJECT_SOURCE_DIR} ${PROJECT_SOURCE_DIR}/include)
 
+# C11, please
+include(CheckCCompilerFlag)
+CHECK_C_COMPILER_FLAG("-std=c11" COMPILER_SUPPORTS_C11)
+if (COMPILER_SUPPORTS_C11)
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c11")
+else()
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99")
+endif()
+
 # C++11, please
 include(CheckCXXCompilerFlag)
 CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
diff --git a/sonar-project.properties b/sonar-project.properties
index e947eac..15684da 100644
--- a/sonar-project.properties
+++ b/sonar-project.properties
@@ -1,5 +1,5 @@
 sonar.projectKey=tyro
-sonar.projectName=tyro
+sonar.projectName=Tyro
 sonar.projectVersion=1.0.0
 sonar.sources=src
 sonar.language=c++
diff --git a/src/base/SFTP.h b/src/base/SFTP.h
index 570c863..76b2e0a 100644
--- a/src/base/SFTP.h
+++ b/src/base/SFTP.h
@@ -5,8 +5,7 @@
  * Created on April 6, 2015, 2:22 PM
  */
 
-#ifndef SFTP_H
-#define	SFTP_H
+#pragma once
 
 #include "../common.h"
 
@@ -52,6 +51,3 @@ private:
 	void ssh_connect();
 	void sftp_connect();
 };
-
-#endif	/* SFTP_H */
-
diff --git a/src/common.h b/src/common.h
index ecf8440..addd433 100644
--- a/src/common.h
+++ b/src/common.h
@@ -1,8 +1,7 @@
 /**
  * A common header for global includes
  */
-#ifndef TYRO_COMMON_H
-#define TYRO_COMMON_H
+#pragma once
 
 // C++ Standard Lib includes
 #include <iostream>
@@ -25,7 +24,4 @@ typedef Json::Writer JsonWriter;
 // Typedef some common templates
 typedef map<string, int> StringConstMap;
 typedef map<string, string> StringMap;
-typedef vector<string> StringVector;
-
-#endif	// TYRO_COMMON_H
-
+typedef vector<string> StringVector;
\ No newline at end of file
diff --git a/src/definitions.h b/src/definitions.h
index 54fd802..88f6b0e 100644
--- a/src/definitions.h
+++ b/src/definitions.h
@@ -1,9 +1,7 @@
 /**
  * Miscellaneous Program-specific definitions
  */
-
-#ifndef DEFINITIONS_H
-#define	DEFINITIONS_H
+#pragma once
 
 // Application config
 const wxString APP_NAME = "Tyro";
@@ -136,7 +134,4 @@ const wxString TYRO_FILE_SAVE_WILDCARDS =
 	"Shell (*.sh, *.bsh)|*.sh;*.bsh|"
 	"SQL (*.sql)|*.sql|"
 	"Text (*.txt)|*.txt|"
-	"Yaml (.yml,*.yaml)| *.yml;*.yaml";
-
-#endif	/* DEFINITIONS_H */
-
+	"Yaml (.yml,*.yaml)| *.yml;*.yaml";
\ No newline at end of file
diff --git a/src/settings/Config.h b/src/settings/Config.h
index 18d6c74..e0c0083 100644
--- a/src/settings/Config.h
+++ b/src/settings/Config.h
@@ -1,5 +1,4 @@
-#ifndef TYRO_CONFIG_H
-#define	TYRO_CONFIG_H
+#pragma once
 
 #include "src/common.h"
 
@@ -13,7 +12,3 @@ private:
     JsonValue default_root;
     JsonReader reader;
 };
-
-
-#endif	/* TYRO_CONFIG_H */
-
diff --git a/src/settings/LangConfig.h b/src/settings/LangConfig.h
index 36428d9..a73ca4f 100644
--- a/src/settings/LangConfig.h
+++ b/src/settings/LangConfig.h
@@ -1,5 +1,4 @@
-#ifndef TYRO_LANG_CONFIG_H
-#define TYRO_LANG_CONFIG_H
+#pragma once
 
 #include "src/wx_common.h"
 #include "src/settings/Config.h"
@@ -20,5 +19,3 @@ private:
 	string lang;
 	StringMap reverseMap;
 };
-
-#endif
diff --git a/src/settings/ThemeConfig.h b/src/settings/ThemeConfig.h
index 644cbc4..2e8d759 100644
--- a/src/settings/ThemeConfig.h
+++ b/src/settings/ThemeConfig.h
@@ -1,9 +1,7 @@
 /**
  * Theme manager
  */
-
-#ifndef TYRO_THEME_CONFIG_H
-#define	TYRO_THEME_CONFIG_H
+#pragma once
 
 #include "src/wx_common.h"
 #include "src/settings/Config.h"
@@ -20,5 +18,3 @@ private:
 	JsonValue current_theme;
 };
 
-#endif	/* TYRO_THEME_CONFIG_H */
-
diff --git a/src/widgets/EditPane.h b/src/widgets/EditPane.h
index 9e71248..7cd64af 100644
--- a/src/widgets/EditPane.h
+++ b/src/widgets/EditPane.h
@@ -1,6 +1,4 @@
-#ifndef TYROEDIT_PANE_H
-#define TYROEDIT_PANE_H
-
+#pragma once
 #include "src/widgets/widget.h"
 #include "src/settings/LangConfig.h"
 #include "src/settings/ThemeConfig.h"
@@ -36,5 +34,3 @@ protected:
 	void SetTheme(string theme_name);
 	void _ApplyTheme(JsonValue &lexer_map);
 };
-
-#endif // TYRODOC_FRAME_H
diff --git a/src/widgets/FilePane.cpp b/src/widgets/FilePane.cpp
index 1050706..5f1727a 100644
--- a/src/widgets/FilePane.cpp
+++ b/src/widgets/FilePane.cpp
@@ -70,11 +70,6 @@ void FilePane::CreateTree(const wxString &path, wxTreeListItem &root)
 	for (wxString filename : *files)
 	{
 		wxFileName fname(filename);
-		
-		/*if (fname.IsRelative())
-		{
-			fname.MakeAbsolute();
-		}*/
 
 		// For loose files, just add directly to the tree
 		if (fname.GetDirCount() == 1)
diff --git a/src/widgets/FilePane.h b/src/widgets/FilePane.h
index 64210af..e82a169 100644
--- a/src/widgets/FilePane.h
+++ b/src/widgets/FilePane.h
@@ -1,5 +1,4 @@
-#ifndef TYRO_FILE_PANE_H
-#define	TYRO_FILE_PANE_H
+#pragma once
 
 #include "src/widgets/widget.h"
 
@@ -23,5 +22,3 @@ private:
 	void CreateTree(const wxString &path, wxTreeListItem &root);
 };
 
-#endif	/* TYRO_FILE_PANE_H */
-
diff --git a/src/widgets/MainFrame.h b/src/widgets/MainFrame.h
index 5e820c9..960e334 100644
--- a/src/widgets/MainFrame.h
+++ b/src/widgets/MainFrame.h
@@ -1,9 +1,7 @@
 /**
  * Main Application Frame
  */
-
-#ifndef TYROMAIN_H
-#define TYROMAIN_H
+#pragma once
 
 #include "src/widgets/TyroMenu.h"
 #include "src/widgets/EditPane.h"
@@ -55,6 +53,3 @@ class MainFrame: public wxFrame
 		void OnQuit(wxCommandEvent &event);
 		void OnAbout(wxCommandEvent &event);
 };
-
-
-#endif // TYROMAIN_H
diff --git a/src/widgets/PrefPane.h b/src/widgets/PrefPane.h
index cd4d244..0179d7f 100644
--- a/src/widgets/PrefPane.h
+++ b/src/widgets/PrefPane.h
@@ -1,9 +1,7 @@
 /**
  * Preference Panes
  */
-
-#ifndef TYRO_PREF_PANE_H
-#define	TYRO_PREF_PANE_H
+#pragma once
 
 #include "src/widgets/widget.h"
 
@@ -17,5 +15,3 @@ protected:
 	wxPreferencesEditor *pref_window = nullptr;
 };
 
-#endif	/* TYRO_PREF_PANE_H */
-
diff --git a/src/widgets/TabContainer.h b/src/widgets/TabContainer.h
index f0f0f20..e02aae0 100644
--- a/src/widgets/TabContainer.h
+++ b/src/widgets/TabContainer.h
@@ -1,9 +1,7 @@
 /**
  * Wrapper around wxAuiNotebook
  */
-
-#ifndef TABCONTAINER_H
-#define	TABCONTAINER_H
+#pragma once
 
 #include "src/widgets/TyroMenu.h"
 #include "src/widgets/EditPane.h"
@@ -37,5 +35,3 @@ private:
 	void OnTabContextMenu(wxAuiNotebookEvent &event);
 };
 
-#endif	/* TABCONTAINER_H */
-
diff --git a/src/widgets/TyroMenu.h b/src/widgets/TyroMenu.h
index 5f18125..5ac648f 100644
--- a/src/widgets/TyroMenu.h
+++ b/src/widgets/TyroMenu.h
@@ -1,8 +1,7 @@
 /**
  * Main Menu class
  */
-#ifndef TYRO_MENU_H
-#define	TYRO_MENU_H
+#pragma once
 
 #include "src/widgets/widget.h"
 
@@ -22,7 +21,4 @@ private:
 	void SetupMainMenus();
 	void SetupLangMenu();
 	void EnableEntireMenu(size_t menuId, wxMenu *menu, bool enable);
-};
-
-#endif	/* TYRO_MENU_H */
-
+};
\ No newline at end of file
diff --git a/src/widgets/widget.h b/src/widgets/widget.h
index 408e58e..76f7133 100644
--- a/src/widgets/widget.h
+++ b/src/widgets/widget.h
@@ -1,8 +1,7 @@
 /**
  * Common header for widgets
  */
-#ifndef TYRO_WIDGET_H
-#define	TYRO_WIDGET_H
+#pragma once
 
 // Common wxWidgets stuff
 #include "src/wx_common.h"
@@ -18,6 +17,3 @@
 #include <wx/treelist.h>
 #include <wx/preferences.h>
 
-
-#endif	/* TYRO_WIDGET_H */
-
diff --git a/src/wx_common.h b/src/wx_common.h
index a69eb10..111ac8e 100644
--- a/src/wx_common.h
+++ b/src/wx_common.h
@@ -1,9 +1,7 @@
 /**
  * Common header for widget classes
  */
-
-#ifndef WX_COMMON_H
-#define	WX_COMMON_H
+#pragma once
 
 #include "common.h"
 
@@ -53,7 +51,4 @@ static inline bool HAS_FONT_BUG()
 }
 
 // Tyro-specific variables
-#include "definitions.h"
-
-#endif	/* WX_COMMON_H */
-
+#include "definitions.h"
\ No newline at end of file