diff --git a/client/TracyCallstack.cpp b/client/TracyCallstack.cpp
index 9e3a0aaf..98749454 100644
--- a/client/TracyCallstack.cpp
+++ b/client/TracyCallstack.cpp
@@ -23,7 +23,7 @@ namespace tracy
 
 #if TRACY_HAS_CALLSTACK == 1
 
-extern "C" t_RtlWalkFrameChain RtlWalkFrameChain = 0;
+extern "C" { t_RtlWalkFrameChain RtlWalkFrameChain = 0; }
 
 void InitCallstack()
 {