1 files changed, 24 insertions, 12 deletions
diff --git a/crypto/src/util/zlib/ZInputStream.cs b/crypto/src/util/zlib/ZInputStream.cs
index 671cf68b0..4b7351555 100644
--- a/crypto/src/util/zlib/ZInputStream.cs
+++ b/crypto/src/util/zlib/ZInputStream.cs
@@ -93,18 +93,30 @@ namespace Org.BouncyCastle.Utilities.Zlib
 		public sealed override bool CanSeek { get { return false; } }
 		public sealed override bool CanWrite { get { return false; } }
 
-	    protected override void Dispose(bool disposing)
-	    {
-	        if (disposing)
-	        {
-                if (!closed)
-                {
-                    closed = true;
-                    input.Dispose();
-                }
-	        }
-	        base.Dispose(disposing);
-	    }
+#if PORTABLE
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+			    if (closed)
+                    return;
+
+                closed = true;
+                Platform.Dispose(input);
+            }
+            base.Dispose(disposing);
+        }
+#else
+        public override void Close()
+		{
+            if (closed)
+                return;
+
+            closed = true;
+            Platform.Dispose(input);
+            base.Close();
+		}
+#endif
 
 		public sealed override void Flush() {}