diff --git a/build/premake/premake5.lua b/build/premake/premake5.lua
index dd152e1a40..04bd5a8b83 100644
--- a/build/premake/premake5.lua
+++ b/build/premake/premake5.lua
@@ -316,7 +316,7 @@ function project_set_build_flags()
 		usestandardpreprocessor "On"
 
 		-- use native wchar_t type (not typedef to unsigned short)
-		nativewchar "on"
+		nativewchar "On"
 
 		-- enable most of the standard warnings
 		warnings "Extra"