diff --git a/UndertaleModLib/Util/BufferBinaryReader.cs b/UndertaleModLib/Util/BufferBinaryReader.cs
index 17a12f3d9..f133739e5 100644
--- a/UndertaleModLib/Util/BufferBinaryReader.cs
+++ b/UndertaleModLib/Util/BufferBinaryReader.cs
@@ -286,7 +286,7 @@ public string ReadGMString()
 
             if (length < 0)
                 throw new IOException("Invalid string length");
-            if (chunkBuffer.Position + length + 1 >= _length)
+            if (chunkBuffer.Position + length + 1 > _length)
                 throw new IOException("Reading out of chunk bounds");
 
             string res;
diff --git a/UndertaleModLib/Util/FileBinaryReader.cs b/UndertaleModLib/Util/FileBinaryReader.cs
index 98db5e992..419ae9551 100644
--- a/UndertaleModLib/Util/FileBinaryReader.cs
+++ b/UndertaleModLib/Util/FileBinaryReader.cs
@@ -214,7 +214,7 @@ public string ReadGMString()
 
             if (length < 0)
                 throw new IOException("Invalid string length");
-            if (Stream.Position + length + 1 >= _length)
+            if (Stream.Position + length + 1 > _length)
                 throw new IOException("Reading out of bounds");
 
             string res;