diff --git a/src/add-ons/kernel/network/stack/net_buffer.cpp b/src/add-ons/kernel/network/stack/net_buffer.cpp
index d807cd9b01..0cd4d86ea6 100644
--- a/src/add-ons/kernel/network/stack/net_buffer.cpp
+++ b/src/add-ons/kernel/network/stack/net_buffer.cpp
@@ -509,6 +509,7 @@ class ReleaseDataHeader : public DataHeaderTraceEntry {
 
 #else
 #	define T(x)
+#	define T2(x)
 #endif	// NET_BUFFER_TRACING