diff --git a/premake5.lua b/premake5.lua
index b39509f..e97d585 100644
--- a/premake5.lua
+++ b/premake5.lua
@@ -9,8 +9,12 @@ project "fencer"
   files { "src/**.c" }
   links { "SDL2", "SDL2_image", "cjson", "m" }
   buildoptions { "-Wall", "-DVMATH_SDL=1" }
-  filter { "configurations:Debug" }
+  targetdir "bin/"
+  filter "configurations:Debug"
+    defines { "DEBUG" }
     buildoptions { "-g3" }
-    targetdir "bin/"
-  filter { "configurations:Release" }
+    symbols "On"
+  filter "configurations:Release"
     buildoptions { "-g0" }
+    defines { "NDEBUG" }
+    optimize "On"