diff --git a/etc/config.sh/compiler b/etc/config.sh/compiler
index 52730251a..743eb0a61 100644
--- a/etc/config.sh/compiler
+++ b/etc/config.sh/compiler
@@ -57,6 +57,12 @@ OpenFOAM | ThirdParty)
     Gcc61)
         gcc_version=gcc-6.1.0
         ;;
+    Gcc72)
+        gcc_version=gcc-7.2.0
+        ;;
+    Gcc73)
+        gcc_version=gcc-7.3.0
+        ;;
     Gcc81)
         gcc_version=gcc-8.1.0
         ;;
diff --git a/src/functionObjects/field/fieldAverage/fieldAverageItem/fieldAverageItem.C b/src/functionObjects/field/fieldAverage/fieldAverageItem/fieldAverageItem.C
index 8d730c39e..897830f58 100644
--- a/src/functionObjects/field/fieldAverage/fieldAverageItem/fieldAverageItem.C
+++ b/src/functionObjects/field/fieldAverage/fieldAverageItem/fieldAverageItem.C
@@ -60,7 +60,7 @@ Foam::functionObjects::fieldAverageItem::fieldAverageItem()
     meanFieldName_("unknown"),
     prime2Mean_(0),
     prime2MeanFieldName_("unknown"),
-    base_(ITER),
+    base_(baseType::iter),
     window_(-1.0),
     windowName_("")
 {}
diff --git a/src/functionObjects/field/fieldAverage/fieldAverageItem/fieldAverageItem.H b/src/functionObjects/field/fieldAverage/fieldAverageItem/fieldAverageItem.H
index 205458313..d72d28249 100644
--- a/src/functionObjects/field/fieldAverage/fieldAverageItem/fieldAverageItem.H
+++ b/src/functionObjects/field/fieldAverage/fieldAverageItem/fieldAverageItem.H
@@ -89,10 +89,10 @@ public:
             static const word EXT_PRIME2MEAN;
 
         //- Enumeration defining the averaging base type
-        enum baseType
+        enum class baseType
         {
-            ITER,
-            TIME
+            iter,
+            time
         };
 
 
@@ -198,16 +198,16 @@ public:
                 return baseTypeNames_[base_];
             }
 
-            //- Return true if base is ITER
+            //- Return true if base is iter
             Switch iterBase() const
             {
-                return base_ == ITER;
+                return base_ == baseType::iter;
             }
 
             //- Return true if base is time
             Switch timeBase() const
             {
-                return base_ == TIME;
+                return base_ == baseType::time;
             }
 
             scalar window() const