diff --git a/trunk/SConstruct b/trunk/SConstruct
index 95517323..afb9795d 100644
--- a/trunk/SConstruct
+++ b/trunk/SConstruct
@@ -44,7 +44,7 @@ if platform.system == "ppc":
   env['LSB_FIRST'] = 0
 
 # Default compiler flags:
-env.Append(CCFLAGS = ['-Wall', '-Wno-write-strings', '-Wno-sign-compare', '-Isrc/lua/src'])
+env.Append(CCFLAGS = ['-Wall', '-Wno-write-strings', '-Wno-sign-compare'])
 
 if os.environ.has_key('PLATFORM'):
   env.Replace(PLATFORM = os.environ['PLATFORM'])
@@ -140,9 +140,11 @@ else:
     lua_available = False
     if conf.CheckLib('lua5.1'):
       env.Append(LINKFLAGS = ["-ldl", "-llua5.1"])
+      env.Append(CCFLAGS = ["-I/usr/include/lua5.1"])
       lua_available = True
     elif conf.CheckLib('lua'):
       env.Append(LINKFLAGS = ["-ldl", "-llua"])
+      env.Append(CCFLAGS = ["-I/usr/include/lua"])
       lua_available = True
     if lua_available == False:
       print 'Could not find liblua, exiting!'