diff --git a/applications/test/DynamicList/Test-DynamicList.C b/applications/test/DynamicList/Test-DynamicList.C
index c03dad9eac..7765269cae 100644
--- a/applications/test/DynamicList/Test-DynamicList.C
+++ b/applications/test/DynamicList/Test-DynamicList.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2017-2019 OpenCFD Ltd.
+    Copyright (C) 2017-2020 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -333,7 +333,7 @@ int main(int argc, char *argv[])
                 labelRange(40, 18),  // trailing portion
                 labelRange(-5, 10),  // leading portion
                 labelRange(10, 8),   // mid-portion
-                labelRange(0, input1.size()), // everything
+                labelRange(input1.size()), // everything
             }
         )
         {
diff --git a/applications/test/IjkField/Test-IjkField.C b/applications/test/IjkField/Test-IjkField.C
index 03dd7baf2a..8e40da95c9 100644
--- a/applications/test/IjkField/Test-IjkField.C
+++ b/applications/test/IjkField/Test-IjkField.C
@@ -5,7 +5,7 @@
     \\  /    A nd           | www.openfoam.com
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
-    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -59,7 +59,7 @@ int main(int argc, char *argv[])
         Info<< "addressing: " << addr1.sizes() << nl;
         Info<< "index of (2,2,2) " << addr1.index(2,2,2) << nl;
 
-        for (const label idx : labelRange(0, addr1.size()))
+        for (const label idx : labelRange(addr1.size()))
         {
             Info<< "index of " << idx << " => " << addr1.index(idx) << nl;
         }
diff --git a/applications/test/List/Test-List.C b/applications/test/List/Test-List.C
index 9b6d3377ef..a09ac01ab6 100644
--- a/applications/test/List/Test-List.C
+++ b/applications/test/List/Test-List.C
@@ -327,7 +327,7 @@ int main(int argc, char *argv[])
         Info<< "normal: " << wList << nl;
     }
 
-    // test SubList and labelRange
+    // Test SubList and labelRange
     {
         Info<< nl;
         labelList longLabelList = identity(25);
@@ -363,7 +363,7 @@ int main(int argc, char *argv[])
         // and complete misses
         longLabelList[{500,50}] = 100;
 
-        // labelRange automatically suppresses -ve size -> nop
+        // -ve size suppressed by internal 'validateRange' = no-op
         longLabelList[{5,-5}] = 42;
         longLabelList[{21,100}] = 42;
 
@@ -379,7 +379,7 @@ int main(int argc, char *argv[])
         //Nope: sort(longLabelList[labelRange(18,5)]);
         {
             // Instead
-            UList<label> sub = longLabelList[labelRange(0, 8)];
+            UList<label> sub = longLabelList[labelRange(8)];
             sort(sub);
         }
         Info<< "sub-sorted: " << flatOutput(longLabelList) << nl;
diff --git a/applications/test/PackedList1/Test-PackedList1.C b/applications/test/PackedList1/Test-PackedList1.C
index 3905e57877..7d3f92adf1 100644
--- a/applications/test/PackedList1/Test-PackedList1.C
+++ b/applications/test/PackedList1/Test-PackedList1.C
@@ -435,7 +435,7 @@ int main(int argc, char *argv[])
 
         bits.set(labelRange(150, 15));
         Info<< "bits" << nl; report(bits, true);
-        bits.set(labelRange(0, 5));
+        bits.set(labelRange(5));
         Info<< "bits" << nl; report(bits, true);
 
 
@@ -455,7 +455,7 @@ int main(int argc, char *argv[])
         bits.unset(labelRange(35, 16));
         Info<< "bits" << nl; report(bits, true);
 
-        bits.unset(labelRange(0, 50));
+        bits.unset(labelRange(50));
         bits.resize(100000);
         bits.set(labelRange(30, 6));
         bits[33] = false;
diff --git a/applications/test/sliceRange/Test-sliceRange.C b/applications/test/sliceRange/Test-sliceRange.C
index b8af788fbe..9467c0bd2f 100644
--- a/applications/test/sliceRange/Test-sliceRange.C
+++ b/applications/test/sliceRange/Test-sliceRange.C
@@ -163,7 +163,7 @@ int main(int argc, char *argv[])
         Info<< nl << "Random list: " << flatOutput(list1) << nl;
 
         {
-            IndirectSubList<scalar> sublist1(list1, labelRange(0, 10));
+            IndirectSubList<scalar> sublist1(list1, labelRange(10));
 
             Info<< nl << "SubList: " << sublist1.addressing() << " = "
                 << flatOutput(sublist1) << nl;
diff --git a/src/functionObjects/field/STDMD/STDMD.C b/src/functionObjects/field/STDMD/STDMD.C
index d550a4cefb..65d47e6887 100644
--- a/src/functionObjects/field/STDMD/STDMD.C
+++ b/src/functionObjects/field/STDMD/STDMD.C
@@ -933,7 +933,7 @@ void Foam::functionObjects::STDMD::writeOutput(OFstream& os) const
 
     writeFileHeader(os);
 
-    for (const auto& i : labelRange(0, oFreqs_.size()))
+    for (const label i : labelRange(oFreqs_.size()))
     {
         os  << oFreqs_[i] << tab
             << oMags_[i] << tab