diff --git a/compiler/optimizing/dead_code_elimination.cc b/compiler/optimizing/dead_code_elimination.cc
index ea91462..4c7dd62 100644
--- a/compiler/optimizing/dead_code_elimination.cc
+++ b/compiler/optimizing/dead_code_elimination.cc
@@ -487,7 +487,7 @@
 }
 
 struct HDeadCodeElimination::TryBelongingInformation {
-  TryBelongingInformation(ScopedArenaAllocator* allocator)
+  explicit TryBelongingInformation(ScopedArenaAllocator* allocator)
       : blocks_in_try(allocator->Adapter(kArenaAllocDCE)),
         coalesced_try_entries(allocator->Adapter(kArenaAllocDCE)) {}