diff --git a/source/Analyzers/KanColleViewer.PluginAnalyzer/InvalidGuidMetadataAnalyzer.cs b/source/Analyzers/KanColleViewer.PluginAnalyzer/InvalidGuidMetadataAnalyzer.cs
index ad76c8eb5..31c41b35c 100644
--- a/source/Analyzers/KanColleViewer.PluginAnalyzer/InvalidGuidMetadataAnalyzer.cs
+++ b/source/Analyzers/KanColleViewer.PluginAnalyzer/InvalidGuidMetadataAnalyzer.cs
@@ -53,7 +53,7 @@ private static void AnalyzeCompilation(CompilationAnalysisContext context)
 				// GUID として解釈できない値か、IPlugin で未定義の GUID が指定されてたらアウト
 				var guidMetadata = syntax.GetGuidMetadata(semanticModel);
 				if (!guidMetadata.HasValue
-					|| plugins.All(x => x.GetGuidMetadataValueSyntax()?.GetGuidMetadata(semanticModel) != guidMetadata))
+					|| plugins.All(x => x.GetGuidMetadataValueSyntax()?.GetGuidMetadata(compilation.GetSemanticModel(x.SyntaxTree)) != guidMetadata))
 				{
 					context.ReportDiagnostic(Diagnostic.Create(InvalidGuidMetadataRule, p.GetLocation()));
 				}
diff --git a/source/Analyzers/KanColleViewer.PluginAnalyzer/Properties/AssemblyInfo.cs b/source/Analyzers/KanColleViewer.PluginAnalyzer/Properties/AssemblyInfo.cs
index 4654394ef..32798a2f9 100644
--- a/source/Analyzers/KanColleViewer.PluginAnalyzer/Properties/AssemblyInfo.cs
+++ b/source/Analyzers/KanColleViewer.PluginAnalyzer/Properties/AssemblyInfo.cs
@@ -24,4 +24,4 @@
 //
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
-[assembly: AssemblyVersion("1.1.0.0")]
+[assembly: AssemblyVersion("1.1.1.0")]
diff --git a/source/Analyzers/KanColleViewer.PluginAnalyzer/Utility.cs b/source/Analyzers/KanColleViewer.PluginAnalyzer/Utility.cs
index 48abde86e..651e87a9a 100644
--- a/source/Analyzers/KanColleViewer.PluginAnalyzer/Utility.cs
+++ b/source/Analyzers/KanColleViewer.PluginAnalyzer/Utility.cs
@@ -134,7 +134,7 @@ private static string GetGuidMetadataConstantValue(this AttributeArgumentSyntax
 		{
 			if (syntax == null) return null;
 			var constantValue = semanticModel.GetConstantValue(syntax.Expression);
-			return constantValue.Value?.ToString() ?? null;
+			return constantValue.Value?.ToString();
 		}
 
 		public static AttributeArgumentSyntax GetGuidMetadataValueSyntax(this ClassDeclarationSyntax classDeclaration)