diff --git a/glslang/MachineIndependent/linkValidate.cpp b/glslang/MachineIndependent/linkValidate.cpp
index 4edd2a90..a790f93f 100644
--- a/glslang/MachineIndependent/linkValidate.cpp
+++ b/glslang/MachineIndependent/linkValidate.cpp
@@ -954,10 +954,10 @@ void TIntermediate::mergeErrorCheck(TInfoSink& infoSink, const TIntermSymbol& sy
     //       current implementation only has one offset.
     if (symbol.getQualifier().layoutMatrix    != unitSymbol.getQualifier().layoutMatrix ||
         symbol.getQualifier().layoutPacking   != unitSymbol.getQualifier().layoutPacking ||
-        symbol.getQualifier().layoutLocation  != unitSymbol.getQualifier().layoutLocation ||
+        (symbol.getQualifier().hasLocation() && unitSymbol.getQualifier().hasLocation() && symbol.getQualifier().layoutLocation != unitSymbol.getQualifier().layoutLocation) ||
         symbol.getQualifier().layoutComponent != unitSymbol.getQualifier().layoutComponent ||
         symbol.getQualifier().layoutIndex     != unitSymbol.getQualifier().layoutIndex ||
-        symbol.getQualifier().layoutBinding   != unitSymbol.getQualifier().layoutBinding ||
+        (symbol.getQualifier().hasBinding() && unitSymbol.getQualifier().hasBinding() && symbol.getQualifier().layoutBinding != unitSymbol.getQualifier().layoutBinding) ||
         (symbol.getQualifier().hasBinding() && (symbol.getQualifier().layoutOffset != unitSymbol.getQualifier().layoutOffset))) {
         error(infoSink, "Layout qualification must match:");
         writeTypeComparison = true;