diff --git a/src/OpenFOAM/primitives/FadOne/FadOne.H b/src/OpenFOAM/primitives/FadOne/FadOne.H
index c44b8a258..51a5250b3 100644
--- a/src/OpenFOAM/primitives/FadOne/FadOne.H
+++ b/src/OpenFOAM/primitives/FadOne/FadOne.H
@@ -166,10 +166,10 @@ public:
         inline FadOne();
 
         //- Construct from value
-        inline FadOne(const double& v);
+        explicit inline FadOne(const double& v);
 
         //- Construct from Istream
-        inline FadOne(Istream&);
+        explicit inline FadOne(Istream&);
 
         //- Construct as copy
         inline FadOne(const FadOne<nVars>&);
diff --git a/src/OpenFOAM/primitives/FadOne/FadOneFunctions.H b/src/OpenFOAM/primitives/FadOne/FadOneFunctions.H
index 8a21f3630..7aeb13f1c 100644
--- a/src/OpenFOAM/primitives/FadOne/FadOneFunctions.H
+++ b/src/OpenFOAM/primitives/FadOne/FadOneFunctions.H
@@ -36,7 +36,7 @@ namespace Foam
 
 /* * * * * * * * * * * * * * * * Global Functions  * * * * * * * * * * * * * */
 
-// Return a string representation of a complex
+// Return a string representation of a FadOne
 template<int nVars>
 word name(const FadOne<nVars>&);