diff --git a/broadcastradio/common/utilsaidl/include/broadcastradio-utils-aidl/Utils.h b/broadcastradio/common/utilsaidl/include/broadcastradio-utils-aidl/Utils.h
index bb43903..3ced685 100644
--- a/broadcastradio/common/utilsaidl/include/broadcastradio-utils-aidl/Utils.h
+++ b/broadcastradio/common/utilsaidl/include/broadcastradio-utils-aidl/Utils.h
@@ -143,6 +143,14 @@
 
 bool satisfies(const ProgramFilter& filter, const ProgramSelector& sel);
 
+struct ProgramSelectorComparator {
+    bool operator()(const ProgramSelector& lhs, const ProgramSelector& rhs) const;
+};
+
+struct ProgramInfoComparator {
+    bool operator()(const ProgramInfo& lhs, const ProgramInfo& rhs) const;
+};
+
 struct ProgramInfoHasher {
     size_t operator()(const ProgramInfo& info) const;
 };