diff --git a/services/surfaceflinger/tests/tracing/TransactionTraceTestSuite.cpp b/services/surfaceflinger/tests/tracing/TransactionTraceTestSuite.cpp
index b8a5e79..9526948 100644
--- a/services/surfaceflinger/tests/tracing/TransactionTraceTestSuite.cpp
+++ b/services/surfaceflinger/tests/tracing/TransactionTraceTestSuite.cpp
@@ -118,7 +118,7 @@
         << info.touchableRegionBounds.right << "," << info.touchableRegionBounds.bottom << "}";
 }
 
-struct find_id : std::unary_function<LayerInfo, bool> {
+struct find_id {
     uint64_t id;
     find_id(uint64_t id) : id(id) {}
     bool operator()(LayerInfo const& m) const { return m.id == id; }