diff --git a/src/d_iwad.cpp b/src/d_iwad.cpp
index 393ca11cc4..4bb53e3fed 100644
--- a/src/d_iwad.cpp
+++ b/src/d_iwad.cpp
@@ -47,6 +47,7 @@
 #include "v_video.h"
 #include "gameconfigfile.h"
 #include "resourcefiles/resourcefile.h"
+#include "version.h"
 
 
 CVAR (Bool, queryiwad, true, CVAR_ARCHIVE|CVAR_GLOBALCONFIG);
@@ -504,19 +505,19 @@ int FIWadManager::IdentifyVersion (TArray<FString> &wadfiles, const char *iwad,
 	if (numwads == 0)
 	{
 		I_FatalError ("Cannot find a game IWAD (doom.wad, doom2.wad, heretic.wad, etc.).\n"
-					  "Did you install ZDoom properly? You can do either of the following:\n"
+					  "Did you install " GAMENAME " properly? You can do either of the following:\n"
 					  "\n"
 #if defined(_WIN32)
-					  "1. Place one or more of these wads in the same directory as ZDoom.\n"
-					  "2. Edit your zdoom-username.ini and add the directories of your iwads\n"
+					  "1. Place one or more of these wads in the same directory as " GAMENAME ".\n"
+					  "2. Edit your " GAMENAMELOWERCASE "-username.ini and add the directories of your iwads\n"
 					  "to the list beneath [IWADSearch.Directories]");
 #elif defined(__APPLE__)
-					  "1. Place one or more of these wads in ~/Library/Application Support/zdoom/\n"
-					  "2. Edit your ~/Library/Preferences/zdoom.ini and add the directories\n"
+					  "1. Place one or more of these wads in ~/Library/Application Support/" GAMENAMELOWERCASE "/\n"
+					  "2. Edit your ~/Library/Preferences/" GAMENAMELOWERCASE ".ini and add the directories\n"
 					  "of your iwads to the list beneath [IWADSearch.Directories]");
 #else
-					  "1. Place one or more of these wads in ~/.config/zdoom/.\n"
-					  "2. Edit your ~/.config/zdoom/zdoom.ini and add the directories of your\n"
+					  "1. Place one or more of these wads in ~/.config/" GAMENAMELOWERCASE "/.\n"
+					  "2. Edit your ~/.config/" GAMENAMELOWERCASE "/" GAMENAMELOWERCASE ".ini and add the directories of your\n"
 					  "iwads to the list beneath [IWADSearch.Directories]");
 #endif
 	}
diff --git a/src/m_specialpaths.cpp b/src/m_specialpaths.cpp
index e6f74eda61..a45c23dc79 100644
--- a/src/m_specialpaths.cpp
+++ b/src/m_specialpaths.cpp
@@ -204,7 +204,7 @@ FString M_GetConfigPath(bool for_reading)
 	{
 		path += "/" GAME_DIR;
 		CreatePath(path);
-		path += "/zdoom.ini";
+		path += "/" GAMENAMELOWERCASE ".ini";
 	}
 	else
 	{ // construct "$PROGDIR/zdoom-$USER.ini"
@@ -224,11 +224,11 @@ FString M_GetConfigPath(bool for_reading)
 					*probe = '_';
 				++probe;
 			}
-			path << "zdoom-" << uname << ".ini";
+			path << GAMENAMELOWERCASE "-" << uname << ".ini";
 		}
 		else
 		{ // Couldn't get user name, so just use zdoom.ini
-			path += "zdoom.ini";
+			path += GAMENAMELOWERCASE ".ini";
 		}
 	}
 
@@ -239,7 +239,7 @@ FString M_GetConfigPath(bool for_reading)
 		if (!FileExists(path))
 		{
 			path = progdir;
-			path << "zdoom.ini";
+			path << GAMENAMELOWERCASE ".ini";
 		}
 	}
 
@@ -411,11 +411,11 @@ FString M_GetConfigPath(bool for_reading)
 		noErr == FSRefMakePath(&folder, (UInt8*)cpath, PATH_MAX))
 	{
 		FString path;
-		path << cpath << "/zdoom.ini";
+		path << cpath << "/" GAMENAMELOWERCASE ".ini";
 		return path;
 	}
 	// Ungh.
-	return "zdoom.ini";
+	return GAMENAMELOWERCASE ".ini";
 }
 
 //===========================================================================
@@ -497,12 +497,12 @@ FString GetUserFile (const char *file)
 		// This can be removed after a release or two
 		// Transfer the old zdoom directory to the new location
 		bool moved = false;
-		FString oldpath = NicePath("~/.zdoom/");
+		FString oldpath = NicePath("~/." GAMENAMELOWERCASE "/");
 		if (stat (oldpath, &extrainfo) != -1)
 		{
 			if (rename(oldpath, path) == -1)
 			{
-				I_Error ("Failed to move old zdoom directory (%s) to new location (%s).",
+				I_Error ("Failed to move old " GAMENAMELOWERCASE " directory (%s) to new location (%s).",
 					oldpath.GetChars(), path.GetChars());
 			}
 			else
@@ -598,7 +598,7 @@ FString M_GetCajunPath(const char *botfilename)
 
 FString M_GetConfigPath(bool for_reading)
 {
-	return GetUserFile("zdoom.ini");
+	return GetUserFile(GAMENAMELOWERCASE ".ini");
 }
 
 //===========================================================================
diff --git a/src/posix/sdl/i_main.cpp b/src/posix/sdl/i_main.cpp
index d60494d1a5..7c08dacdbb 100644
--- a/src/posix/sdl/i_main.cpp
+++ b/src/posix/sdl/i_main.cpp
@@ -240,7 +240,7 @@ int main (int argc, char **argv)
 #if !defined (__APPLE__)
 	{
 		int s[4] = { SIGSEGV, SIGILL, SIGFPE, SIGBUS };
-		cc_install_handlers(argc, argv, 4, s, "zdoom-crash.log", DoomSpecificInfo);
+		cc_install_handlers(argc, argv, 4, s, GAMENAMELOWERCASE "-crash.log", DoomSpecificInfo);
 	}
 #endif // !__APPLE__
 
diff --git a/src/version.h b/src/version.h
index 7f6d9cedde..cbbb8bd214 100644
--- a/src/version.h
+++ b/src/version.h
@@ -88,13 +88,14 @@ const char *GetVersionString();
 
 // More stuff that needs to be different for derivatives.
 #define GAMENAME "ZDoom"
+#define GAMENAMELOWERCASE "zdoom"
 #define FORUM_URL "http://forum.zdoom.org"
 #define BUGS_FORUM_URL	"http://forum.zdoom.org/index.php?c=3"
 
 #if defined(__APPLE__) || defined(_WIN32)
 #define GAME_DIR GAMENAME
 #else
-#define GAME_DIR ".config/zdoom"
+#define GAME_DIR ".config/" GAMENAMELOWERCASE
 #endif