diff --git a/Source/zlib/INFLATE.C b/Source/zlib/INFLATE.C
index 115dd0a7..7a9689a4 100644
--- a/Source/zlib/INFLATE.C
+++ b/Source/zlib/INFLATE.C
@@ -15,14 +15,12 @@
 #include "infcodes.h"
 #include "infutil.h"
 
-int ZEXPORT inflateInit(z_streamp z)
+void inflateInit(z_streamp z)
 {
   z->blocks.end = z->blocks.window + (1 << DEF_WBITS);
   z->blocks.mode = TYPE;
 
   inflateReset(z);
-
-  return Z_OK;
 }
 
 
diff --git a/Source/zlib/ZLIB.H b/Source/zlib/ZLIB.H
index b0871490..499f11ff 100644
--- a/Source/zlib/ZLIB.H
+++ b/Source/zlib/ZLIB.H
@@ -196,7 +196,7 @@ typedef z_stream FAR *z_streamp;
 ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
 
 ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));
-ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));
+ZEXTERN void ZEXPORT inflateInit OF((z_streamp strm));
 
 int ZEXPORT inflate(z_streamp z);
 ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));