diff --git a/lib/zlib/adler32.js b/lib/zlib/adler32.js
index f24df0c..299d10a 100644
--- a/lib/zlib/adler32.js
+++ b/lib/zlib/adler32.js
@@ -22,7 +22,7 @@ function adler32(adler, buf, len, pos) {
     s2 %= 65521;
   }
 
-  return (s1 | (s2 << 16)) >>> 0;
+  return (s1 | (s2 << 16));
 }
 
 
diff --git a/lib/zlib/inflate.js b/lib/zlib/inflate.js
index 8957431..8e3f348 100644
--- a/lib/zlib/inflate.js
+++ b/lib/zlib/inflate.js
@@ -506,7 +506,7 @@ function inflate(strm, flush) {
     return  (((q >>> 24) & 0xff) +
             ((q >>> 8) & 0xff00) +
             ((q & 0xff00) << 8) +
-            ((q & 0xff) << 24)) >>> 0;
+            ((q & 0xff) << 24));
   }
 
   /*