diff --git a/AMBuildScript b/AMBuildScript
index 8f170527..d9c61082 100644
--- a/AMBuildScript
+++ b/AMBuildScript
@@ -148,9 +148,10 @@ class SM:
 				if (self.vendor == 'gcc' and cxx.majorVersion >= 4) or self.vendor == 'clang':
 					self.compiler.AddToListVar('CFLAGS', '-fvisibility=hidden')
 					self.compiler.AddToListVar('CXXFLAGS', '-fvisibility-inlines-hidden')
+				if (self.vendor == 'gcc' and cxx.majorVersion >= 4 && cxx.minorVersoin >= 6) or self.vendor == 'clang':
+					self.compiler.AddToListVar('CFLAGS', '-Wno-narrowing')
 				self.compiler.AddToListVar('CFLAGS', '-Wall')
 				self.compiler.AddToListVar('CFLAGS', '-Werror')
-				self.compiler.AddToListVar('CFLAGS', '-Wno-narrowing')
 				self.compiler.AddToListVar('CFLAGS', '-Wno-uninitialized')
 				self.compiler.AddToListVar('CFLAGS', '-Wno-unused')
 				self.compiler.AddToListVar('CFLAGS', '-Wno-switch')