diff --git a/Makefile b/Makefile
index b75da64..d1d86c2 100644
--- a/Makefile
+++ b/Makefile
@@ -35,7 +35,7 @@ else
 GLLIBS     := -lGL -lGLU
 endif
 
-CFLAGS   := $(LUAINCLUDE) $(SDLINCLUDE) $(ODEINCLUDE)
+CFLAGS   := $(LUAINCLUDE) $(SDLINCLUDE) $(ODEINCLUDE) -O2
 CXXFLAGS := $(CFLAGS)
 LDFLAGS  := $(LUALIBS) $(ODELIBS) $(GLLIBS) $(WINDOWSLIBS) $(SDLLIBS)