1 files changed, 2 insertions, 2 deletions
diff --git a/intern/cycles/util/util_debug.h b/intern/cycles/util/util_debug.h
index 641abcc0668..1787ff648ee 100644
--- a/intern/cycles/util/util_debug.h
+++ b/intern/cycles/util/util_debug.h
@@ -130,11 +130,11 @@ private:
 
 #if (__cplusplus > 199711L)
 public:
-	DebugFlags(DebugFlags const& /*other*/)     = delete;
+	explicit DebugFlags(DebugFlags const& /*other*/)     = delete;
 	void operator=(DebugFlags const& /*other*/) = delete;
 #else
 private:
-	DebugFlags(DebugFlags const& /*other*/);
+	explicit DebugFlags(DebugFlags const& /*other*/);
 	void operator=(DebugFlags const& /*other*/);
 #endif
 };