diff --git a/applications/test/PackedList2/Test-PackedList2.C b/applications/test/PackedList2/Test-PackedList2.C
index 26981b484f..ce9b15ed51 100644
--- a/applications/test/PackedList2/Test-PackedList2.C
+++ b/applications/test/PackedList2/Test-PackedList2.C
@@ -54,7 +54,7 @@ int main(int argc, char *argv[])
     std::vector<bool> stlVector(n, true);
 
     labelHashSet emptyHash;
-    labelHashSet fullHash(1000);
+    labelHashSet fullHash(1024);
     for (label i = 0; i < n; i++)
     {
         fullHash.insert(i);
diff --git a/applications/utilities/mesh/generation/snappyHexMesh/snappyHexMesh.C b/applications/utilities/mesh/generation/snappyHexMesh/snappyHexMesh.C
index 3e91747415..28d5d4dfc6 100644
--- a/applications/utilities/mesh/generation/snappyHexMesh/snappyHexMesh.C
+++ b/applications/utilities/mesh/generation/snappyHexMesh/snappyHexMesh.C
@@ -393,7 +393,7 @@ void extractSurface
 
     // Collect sizes. Hash on names to handle local-only patches (e.g.
     //  processor patches)
-    HashTable<label> patchSize(1000);
+    HashTable<label> patchSize(1024);
     label nFaces = 0;
     forAllConstIter(labelHashSet, includePatches, iter)
     {
@@ -405,7 +405,7 @@ void extractSurface
 
 
     // Allocate zone/patch for all patches
-    HashTable<label> compactZoneID(1000);
+    HashTable<label> compactZoneID(1024);
     forAllConstIter(HashTable<label>, patchSize, iter)
     {
         label sz = compactZoneID.size();
diff --git a/applications/utilities/surface/surfaceMeshTriangulate/surfaceMeshTriangulate.C b/applications/utilities/surface/surfaceMeshTriangulate/surfaceMeshTriangulate.C
index 712ed6564e..e97ab81549 100644
--- a/applications/utilities/surface/surfaceMeshTriangulate/surfaceMeshTriangulate.C
+++ b/applications/utilities/surface/surfaceMeshTriangulate/surfaceMeshTriangulate.C
@@ -230,7 +230,7 @@ int main(int argc, char *argv[])
 
 
         // From (name of) patch to compact 'zone' index
-        HashTable<label> compactZoneID(1000);
+        HashTable<label> compactZoneID(1024);
         // Mesh face and compact zone indx
         DynamicList<label> faceLabels;
         DynamicList<label> compactZones;
@@ -238,7 +238,7 @@ int main(int argc, char *argv[])
         {
             // Collect sizes. Hash on names to handle local-only patches (e.g.
             //  processor patches)
-            HashTable<label> patchSize(1000);
+            HashTable<label> patchSize(1024);
             label nFaces = 0;
             forAllConstIter(labelHashSet, includePatches, iter)
             {
@@ -247,7 +247,7 @@ int main(int argc, char *argv[])
                 nFaces += pp.size();
             }
 
-            HashTable<label> zoneSize(1000);
+            HashTable<label> zoneSize(1024);
             forAllConstIter(labelHashSet, includeFaceZones, iter)
             {
                 const faceZone& pp = fzm[iter.key()];