diff --git a/src/include/swab.h b/src/include/swab.h
index a372797..7d781a0 100644
--- a/src/include/swab.h
+++ b/src/include/swab.h
@@ -25,10 +25,10 @@
 
 #define swab32(x) \
 	((unsigned int)( \
-		(((unsigned int)(x) & (unsigned int)0x000000ffUL) << 24) | \
-		(((unsigned int)(x) & (unsigned int)0x0000ff00UL) <<  8) | \
-		(((unsigned int)(x) & (unsigned int)0x00ff0000UL) >>  8) | \
-		(((unsigned int)(x) & (unsigned int)0xff000000UL) >> 24)))
+		(((unsigned int)(x) & 0x000000ffUL) << 24) | \
+		(((unsigned int)(x) & 0x0000ff00UL) <<  8) | \
+		(((unsigned int)(x) & 0x00ff0000UL) >>  8) | \
+		(((unsigned int)(x) & 0xff000000UL) >> 24)))
 
 #define swab64(x) \
 	((uint64_t)( \