diff --git a/Source/build.cpp b/Source/build.cpp
index ae125cde..6ecf645e 100644
--- a/Source/build.cpp
+++ b/Source/build.cpp
@@ -396,7 +396,7 @@ void CEXEBuild::initialize(const TCHAR *makensis_path)
 #ifndef NSIS_CONFIG_CONST_DATA_PATH
     nsis_dir = get_dir_name(get_executable_dir(makensis_path));
 #else
-    nsis_dir = PosixBug_CtoTString(PREFIX_DATA);
+    nsis_dir = _T(PREFIX_DATA);
 #endif
   }
   definedlist.add(_T("NSISDIR"), nsis_dir.c_str());
diff --git a/Source/makenssi.cpp b/Source/makenssi.cpp
index 71472c10..0a172905 100644
--- a/Source/makenssi.cpp
+++ b/Source/makenssi.cpp
@@ -561,7 +561,7 @@ static inline int makensismain(int argc, TCHAR **argv)
 #ifndef NSIS_CONFIG_CONST_DATA_PATH
           main_conf = get_dir_name(get_executable_dir(argv[0]));
 #else
-          main_conf = PosixBug_CtoTString(PREFIX_CONF);
+          main_conf = _T(PREFIX_CONF);
 #endif
         else
           main_conf = env_var;