diff --git a/indra/llcorehttp/bufferarray.cpp b/indra/llcorehttp/bufferarray.cpp
index c13b1a3540425a61b152d15edf8ad9ea7a307fc8..47389da0bebb154c00bd800b07e9898f18c7b72a 100644
--- a/indra/llcorehttp/bufferarray.cpp
+++ b/indra/llcorehttp/bufferarray.cpp
@@ -85,6 +85,8 @@ class BufferArray::Block
 // ==================================
 
 
+const size_t BufferArray::BLOCK_ALLOC_SIZE;
+
 BufferArray::BufferArray()
 	: LLCoreInt::RefCounted(true),
 	  mLen(0)