Fix a wrong assertion.

Thanks to Stefan Bodewig.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/org/tukaani/xz/SimpleInputStream.java b/src/org/tukaani/xz/SimpleInputStream.java
index ce1c3b2..e187b72 100644
--- a/src/org/tukaani/xz/SimpleInputStream.java
+++ b/src/org/tukaani/xz/SimpleInputStream.java
@@ -39,7 +39,7 @@ class SimpleInputStream extends InputStream {
 
         // The simpleFilter argument comes from this package
         // so it is known to be non-null already.
-        assert simpleFilter == null;
+        assert simpleFilter != null;
 
         this.in = in;
         this.simpleFilter = simpleFilter;