diff --git a/deps/glslang/glslang/glslang/MachineIndependent/Intermediate.cpp b/deps/glslang/glslang/glslang/MachineIndependent/Intermediate.cpp
index 3f6f588df9..fc29854f36 100644
--- a/deps/glslang/glslang/glslang/MachineIndependent/Intermediate.cpp
+++ b/deps/glslang/glslang/glslang/MachineIndependent/Intermediate.cpp
@@ -1191,6 +1191,8 @@ TIntermTyped* TIntermediate::addShapeConversion(const TType& type, TIntermTyped*
             const int matSize = type.getMatrixRows() * type.getMatrixCols();
             TIntermAggregate* rhsAggregate = new TIntermAggregate();
 
+            const bool isSimple = (node->getAsSymbolNode() != NULL) || (node->getAsConstantUnion() != NULL);
+
             for (int x=0; x<matSize; ++x)
                 rhsAggregate->getSequence().push_back(node);