diff --git a/AMBuildScript b/AMBuildScript
index f0c3981..edaf5e9 100644
--- a/AMBuildScript
+++ b/AMBuildScript
@@ -214,7 +214,12 @@ class DHooksConfig(object):
       cxx.cxxflags += ['-stdlib=libstdc++']
     elif builder.target_platform == 'windows':
       cxx.defines += ['WIN32', '_WINDOWS']
-	  
+
+    if cxx.vendor == 'gcc' or cxx.vendor == 'clang':
+      cxx.cxxflags += ['-fno-rtti']
+    elif cxx.vendor == 'msvc':
+      cxx.cxxflags += ['/GR-']
+ 
     cxx.defines += ['META_NO_HL2SDK']
 	
   def IncludeSDKs(self, builder):