diff --git a/glslang/MachineIndependent/linkValidate.cpp b/glslang/MachineIndependent/linkValidate.cpp
index 62a1166c..82e866ad 100644
--- a/glslang/MachineIndependent/linkValidate.cpp
+++ b/glslang/MachineIndependent/linkValidate.cpp
@@ -375,7 +375,7 @@ void TIntermediate::mergeTrees(TInfoSink& infoSink, TIntermediate& unit)
 }
 
 // BEGIN @MEWIN - 2023-02-22 - Added function to merge source files when linking shaders.
-void TIntermediate::mergeSources(TInfoSink& infoSink, TIntermediate& unit)
+void TIntermediate::mergeSources(TInfoSink& /* infoSink */, TIntermediate& unit)
 {
     auto addSource = [&](const char* name, const char* text, size_t len)
     {