diff --git a/src/unicode/utf8/utf8.go b/src/unicode/utf8/utf8.go
index 6ccd464373..db845ab2f2 100644
--- a/src/unicode/utf8/utf8.go
+++ b/src/unicode/utf8/utf8.go
@@ -110,12 +110,10 @@ func FullRune(p []byte) bool {
 	}
 	// Must be short or invalid.
 	accept := acceptRanges[x>>4]
-	if n > 1 {
-		if c := p[1]; c < accept.lo || accept.hi < c {
-			return true
-		} else if n > 2 && (p[2] < locb || hicb < p[2]) {
-			return true
-		}
+	if n > 1 && (p[1] < accept.lo || accept.hi < p[1]) {
+		return true
+	} else if n > 2 && (p[2] < locb || hicb < p[2]) {
+		return true
 	}
 	return false
 }
@@ -132,12 +130,10 @@ func FullRuneInString(s string) bool {
 	}
 	// Must be short or invalid.
 	accept := acceptRanges[x>>4]
-	if n > 1 {
-		if c := s[1]; c < accept.lo || accept.hi < c {
-			return true
-		} else if n > 2 && (s[2] < locb || hicb < s[2]) {
-			return true
-		}
+	if n > 1 && (s[1] < accept.lo || accept.hi < s[1]) {
+		return true
+	} else if n > 2 && (s[2] < locb || hicb < s[2]) {
+		return true
 	}
 	return false
 }