diff --git a/src/OpenFOAM/db/IOstreams/memory/memoryStreamBuffer.H b/src/OpenFOAM/db/IOstreams/memory/memoryStreamBuffer.H
index 8de6992f8706ae3dde1cc686ee7822b27b5dd5a0..ea9ef6abe058bae6f7d2b98d83eed61ed0c0d726 100644
--- a/src/OpenFOAM/db/IOstreams/memory/memoryStreamBuffer.H
+++ b/src/OpenFOAM/db/IOstreams/memory/memoryStreamBuffer.H
@@ -519,7 +519,8 @@ public:
                 if (newCapacity < len)
                 {
                     // Increase capacity (doubling)
-                    newCapacity = max(len, label(2*storage_.size()));
+                    newCapacity =
+                        Foam::max(label(len), label(2*storage_.size()));
                 }
 
                 // Info<<"request:" << len