diff --git a/CHANGELOG.md b/CHANGELOG.md
index 77d5db055..92d1b74f9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ All notable changes to this project will be documented in this file.
 
 ### Fixed
 - [#1897] Close menu button without selecting specific item
+- Reading UI32 values
 
 ### Changed
 - Quick search needs minimum of 3 characters
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWFInputStream.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWFInputStream.java
index f5e31118d..8d877a488 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWFInputStream.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWFInputStream.java
@@ -550,7 +550,7 @@ public class SWFInputStream implements AutoCloseable {
      * @throws IOException
      */
     private long readUI32Internal() throws IOException {
-        return (readEx() + (readEx() << 8) + (readEx() << 16) + (readEx() << 24)) & 0xffffffff;
+        return (readEx() + (readEx() << 8) + (readEx() << 16) + (readEx() << 24)) & 0xffffffffL;
     }
 
     /**