diff --git a/Cpp2IL.Core/Model/Contexts/ApplicationAnalysisContext.cs b/Cpp2IL.Core/Model/Contexts/ApplicationAnalysisContext.cs
index 9a9d034e..74cad761 100644
--- a/Cpp2IL.Core/Model/Contexts/ApplicationAnalysisContext.cs
+++ b/Cpp2IL.Core/Model/Contexts/ApplicationAnalysisContext.cs
@@ -150,7 +150,7 @@ private void PopulateMethodsByAddressTable()
     /// <returns>An assembly analysis context if one can be found which matches the given name, else null.</returns>
     public AssemblyAnalysisContext? GetAssemblyByName(string name)
     {
-        if (name[^4] == '.' && name[^3] == 'd')
+        if (name.Length >= 4 && name[^4] == '.' && name[^3] == 'd')
             //Trim .dll extension
             name = name[..^4];