diff --git a/gen.go b/gen.go
index 1408837..875e272 100644
--- a/gen.go
+++ b/gen.go
@@ -48,7 +48,7 @@ func mul(a, b int) int { return a * b }
 func mod(a, b int) int { return a % b }
 
 func afunc(x, y int) string {
-	return fmt.Sprintf("a[%d]", y%5*5 + x%5)
+	return fmt.Sprintf("a[%d]", y%5*5+x%5)
 }
 
 func bfunc(x, y int) string {
diff --git a/keccak.go b/keccak.go
index 15eaf11..ccdef4f 100644
--- a/keccak.go
+++ b/keccak.go
@@ -1,4 +1,3 @@
-
 package keccak
 
 // roundGeneric implements one round of the keccak-f[1600] permutation.
diff --git a/sponge.go b/sponge.go
index e1ededb..8585ccf 100644
--- a/sponge.go
+++ b/sponge.go
@@ -52,11 +52,11 @@ func (d *digest) flush() {
 	b := d.buf[:d.len]
 loop:
 	for i := range d.a {
-			if len(b) == 0 {
-				break loop
-			}
-			d.a[i] ^= le64dec(b)
-			b = b[8:]
+		if len(b) == 0 {
+			break loop
+		}
+		d.a[i] ^= le64dec(b)
+		b = b[8:]
 	}
 	keccakf(&d.a)
 	d.len = 0