1 files changed, 1 insertions, 1 deletions
diff --git a/include/llvm/CodeGen/MachineModuleInfo.h b/include/llvm/CodeGen/MachineModuleInfo.h
index 457d33d1f2..1f9decf574 100644
--- a/include/llvm/CodeGen/MachineModuleInfo.h
+++ b/include/llvm/CodeGen/MachineModuleInfo.h
@@ -97,7 +97,7 @@ private:
                                         // Dwarf writers.
   
 protected:
-  DebugInfoDesc(unsigned T) : Tag(T | LLVMDebugVersion) {}
+  explicit DebugInfoDesc(unsigned T) : Tag(T | LLVMDebugVersion) {}
   
 public:
   virtual ~DebugInfoDesc() {}