diff --git a/src/LibHac/Kip.cs b/src/LibHac/Kip.cs
index 8e7c89be..d5396ea7 100644
--- a/src/LibHac/Kip.cs
+++ b/src/LibHac/Kip.cs
@@ -203,7 +203,7 @@ namespace LibHac
                 Kips[i] = new KipReader();
                 Kips[i].Initialize(Storage.Slice(offset)).ThrowIfFailure();
 
-                offset += Kips[i].GetUncompressedSize();
+                offset += Kips[i].GetFileSize();
             }
         }
     }
diff --git a/src/LibHac/Loader/KipReader.cs b/src/LibHac/Loader/KipReader.cs
index 708a2c25..a1f6c9e1 100644
--- a/src/LibHac/Loader/KipReader.cs
+++ b/src/LibHac/Loader/KipReader.cs
@@ -97,7 +97,7 @@ namespace LibHac.Loader
             }
         }
 
-        private int GetFileSize()
+        public int GetFileSize()
         {
             int size = Unsafe.SizeOf<KipHeader>();
 
@@ -248,7 +248,7 @@ namespace LibHac.Loader
             if (buffer.Length < totalCompSize + additionalSize)
                 return ResultLibHac.BufferTooSmall.Log();
 
-            Span<byte> data = buffer;
+            Span<byte> data = buffer.Slice(compressedDataSize - totalCompSize);
 
             int inOffset = totalCompSize - footerSize;
             int outOffset = totalCompSize + additionalSize;