diff --git a/src/compiler/isaspec/isaspec.h b/src/compiler/isaspec/isaspec.h
index 3af0e73e136..20635c10b55 100644
--- a/src/compiler/isaspec/isaspec.h
+++ b/src/compiler/isaspec/isaspec.h
@@ -41,11 +41,6 @@ struct isa_decode_value {
 	uint64_t num;
 };
 
-struct isa_decode_hook {
-	const char *fieldname;
-	void (*cb)(void *data, struct isa_decode_value *val);
-};
-
 struct isa_entrypoint {
 	const char *name;
 	uint32_t offset;