diff --git a/InstructionSets/x86/Decoder.cpp b/InstructionSets/x86/Decoder.cpp
index 95cb5e14a..bc6617c51 100644
--- a/InstructionSets/x86/Decoder.cpp
+++ b/InstructionSets/x86/Decoder.cpp
@@ -1123,3 +1123,4 @@ template class InstructionSet::x86::Decoder<InstructionSet::x86::Model::i8086>;
 template class InstructionSet::x86::Decoder<InstructionSet::x86::Model::i80186>;
 template class InstructionSet::x86::Decoder<InstructionSet::x86::Model::i80286>;
 template class InstructionSet::x86::Decoder<InstructionSet::x86::Model::i80386>;
+#error Is GCC here?