diff --git a/Externals/Bochs_disasm/SConscript b/Externals/Bochs_disasm/SConscript
index f0db9ff729..ebc208178b 100644
--- a/Externals/Bochs_disasm/SConscript
+++ b/Externals/Bochs_disasm/SConscript
@@ -8,5 +8,14 @@ files = [
 	"PowerPCDisasm.cpp",
 	]
 
-env_bochs = env.Copy()
+def filterWarnings(flags):
+	return ' '.join(
+		flag
+		for flag in flags.split()
+		if not flag.startswith('-W')
+		)
+env_bochs = env.Copy(
+	CCFLAGS = filterWarnings(env['CCFLAGS']),
+	CXXFLAGS = filterWarnings(env['CXXFLAGS']),
+	)
 env_bochs.StaticLibrary("bdisasm", files)