diff --git a/src/ByteBuffer.cpp b/src/ByteBuffer.cpp
index 67fe1012c..a3b40e5ef 100644
--- a/src/ByteBuffer.cpp
+++ b/src/ByteBuffer.cpp
@@ -47,7 +47,7 @@
 #ifdef SELF_TEST
 
 /// Self-test of the VarInt-reading and writing code
-class cByteBufferSelfTest
+static class cByteBufferSelfTest
 {
 public:
 	cByteBufferSelfTest(void)