diff --git a/src/OpenFOAM/db/IOobject/IOobjectIO.C b/src/OpenFOAM/db/IOobject/IOobjectIO.C
index 61eebcb8c5..d19b77c5cd 100644
--- a/src/OpenFOAM/db/IOobject/IOobjectIO.C
+++ b/src/OpenFOAM/db/IOobject/IOobjectIO.C
@@ -39,8 +39,8 @@ Foam::Ostream& Foam::operator<<(Ostream& os, const InfoProxy<IOobject>& ip)
         << io.type() << token::SPACE
         << io.name()
         << " local: " << io.local()
-        << " readOpt: " << io.readOpt()
-        << " writeOpt: " << io.writeOpt()
+        << " readOpt: " << static_cast<char>(io.readOpt())
+        << " writeOpt: " << static_cast<char>(io.writeOpt())
         << " globalObject: " << io.globalObject()
         << token::SPACE << io.path() << endl;
 
diff --git a/src/OpenFOAM/db/objectRegistry/objectRegistry.C b/src/OpenFOAM/db/objectRegistry/objectRegistry.C
index 0c9535f35a..414e1c0cd0 100644
--- a/src/OpenFOAM/db/objectRegistry/objectRegistry.C
+++ b/src/OpenFOAM/db/objectRegistry/objectRegistry.C
@@ -470,7 +470,7 @@ bool Foam::objectRegistry::writeObject
                 << name() << " : Considering writing object "
                 << iter.key()
                 << " of type " << iter->type()
-                << " with writeOpt " << iter->writeOpt()
+                << " with writeOpt " << static_cast<char>(iter->writeOpt())
                 << " to file " << iter->objectPath()
                 << endl;
         }