diff --git a/Il2CppInspector.Common/IL2CPP/Il2CppInspector.cs b/Il2CppInspector.Common/IL2CPP/Il2CppInspector.cs
index feec8ed..cb0be38 100644
--- a/Il2CppInspector.Common/IL2CPP/Il2CppInspector.cs
+++ b/Il2CppInspector.Common/IL2CPP/Il2CppInspector.cs
@@ -151,7 +151,8 @@ namespace Il2CppInspector
             // Metadata usages (addresses)
             // Unfortunately the value supplied in MetadataRegistration.matadataUsagesCount seems to be incorrect,
             // so we have to calculate the correct number of usages above before reading the usage address list from the binary
-            var addresses = Binary.Image.ReadMappedArray<ulong>(Binary.MetadataRegistration.metadataUsages, usages.Count);
+            var count = usages.Keys.Max() + 1;
+            var addresses = Binary.Image.ReadMappedArray<ulong>(Binary.MetadataRegistration.metadataUsages, (int) count);
             foreach (var usage in usages)
                 usage.Value.SetAddress(addresses[usage.Key]);