diff --git a/ArcFormats/Nexas/ArcPAC.cs b/ArcFormats/Nexas/ArcPAC.cs
index 3857ab17a..7c55dcfa0 100644
--- a/ArcFormats/Nexas/ArcPAC.cs
+++ b/ArcFormats/Nexas/ArcPAC.cs
@@ -316,7 +316,13 @@ static private byte[] ZstdDecompress (Stream s, uint unpackedSize)
             using (var ds = new ZstdSharp.DecompressionStream (s))
             {
                 var dst = new byte[unpackedSize];
-                ds.Read (dst, 0, dst.Length);
+                int decompressedSize = 0;
+
+                while(decompressedSize < unpackedSize) 
+                {
+                    decompressedSize += ds.Read(dst, decompressedSize, (int)unpackedSize - decompressedSize);
+                }
+
                 return dst;
             }
         }