diff --git a/src/main/java/com/iyxan23/zipalignjava/ZipAlign.java b/src/main/java/com/iyxan23/zipalignjava/ZipAlign.java
index 4b406d8..48fb0c5 100644
--- a/src/main/java/com/iyxan23/zipalignjava/ZipAlign.java
+++ b/src/main/java/com/iyxan23/zipalignjava/ZipAlign.java
@@ -193,7 +193,7 @@ public static void alignZip(RandomAccessFile file, OutputStream out, int alignme
 
         // to keep track of how many bytes we've shifted through the whole file (because we're going to pad null bytes
         // to align)
-        short shiftAmount = 0;
+        int shiftAmount = 0;
 
         file.seek(centralDirOffset);
         byte[] entry = new byte[46]; // not including the filename, extra field, and file comment