diff --git a/src/cmdlib.cpp b/src/cmdlib.cpp
index af89cb3522..b313f56914 100644
--- a/src/cmdlib.cpp
+++ b/src/cmdlib.cpp
@@ -195,33 +195,6 @@ bool DirEntryExists(const char *pathname, bool *isdir)
 	return res;
 }
 
-//==========================================================================
-//
-// DefaultExtension		-- char array version
-//
-// Appends the extension to a pathname if it does not already have one.
-//
-//==========================================================================
-
-void DefaultExtension (char *path, const char *extension)
-{
-	char *src;
-//
-// if path doesn't have a .EXT, append extension
-// (extension should include the .)
-//
-	src = path + strlen(path) - 1;
-
-	while (src != path && !IsSeperator(*src))
-	{
-		if (*src == '.')
-			return;                 // it has an extension
-		src--;
-	}
-
-	strcat (path, extension);
-}
-
 //==========================================================================
 //
 // DefaultExtension		-- FString version
diff --git a/src/cmdlib.h b/src/cmdlib.h
index 7a5fa21a6b..d187b43cf8 100644
--- a/src/cmdlib.h
+++ b/src/cmdlib.h
@@ -27,7 +27,6 @@ extern	FString progdir;
 void	FixPathSeperator (char *path);
 static void	inline FixPathSeperator (FString &path) { path.ReplaceChars('\\', '/'); }
 
-void 	DefaultExtension (char *path, const char *extension);
 void 	DefaultExtension (FString &path, const char *extension);
 
 FString	ExtractFilePath (const char *path);