diff --git a/http2/hpack/encode.go b/http2/hpack/encode.go
index 6b3b9f8..395e1c2 100644
--- a/http2/hpack/encode.go
+++ b/http2/hpack/encode.go
@@ -89,21 +89,16 @@
 // becomes false.
 func (e *Encoder) searchTable(f HeaderField) (i uint64, nameValueMatch bool) {
 	for idx, hf := range staticTable {
-		if !constantTimeStringCompare(hf.Name, f.Name) {
+		if hf.Name != f.Name {
 			continue
 		}
 		if i == 0 {
 			i = uint64(idx + 1)
 		}
-		if f.Sensitive {
+		if f.Sensitive || hf.Value != f.Value {
 			continue
 		}
-		if !constantTimeStringCompare(hf.Value, f.Value) {
-			continue
-		}
-		i = uint64(idx + 1)
-		nameValueMatch = true
-		return
+		return uint64(idx + 1), true
 	}
 
 	j, nameValueMatch := e.dynTab.search(f)
diff --git a/http2/hpack/hpack.go b/http2/hpack/hpack.go
index 007bc7f..d18be44 100644
--- a/http2/hpack/hpack.go
+++ b/http2/hpack/hpack.go
@@ -199,22 +199,6 @@
 	}
 }
 
-// constantTimeStringCompare compares string a and b in a constant
-// time manner.
-func constantTimeStringCompare(a, b string) bool {
-	if len(a) != len(b) {
-		return false
-	}
-
-	c := byte(0)
-
-	for i := 0; i < len(a); i++ {
-		c |= a[i] ^ b[i]
-	}
-
-	return c == 0
-}
-
 // Search searches f in the table. The return value i is 0 if there is
 // no name match. If there is name match or name/value match, i is the
 // index of that entry (1-based). If both name and value match,
@@ -223,7 +207,7 @@
 	l := len(dt.ents)
 	for j := l - 1; j >= 0; j-- {
 		ent := dt.ents[j]
-		if !constantTimeStringCompare(ent.Name, f.Name) {
+		if ent.Name != f.Name {
 			continue
 		}
 		if i == 0 {
@@ -232,14 +216,12 @@
 		if f.Sensitive {
 			continue
 		}
-		if !constantTimeStringCompare(ent.Value, f.Value) {
+		if ent.Value != f.Value {
 			continue
 		}
-		i = uint64(l - j)
-		nameValueMatch = true
-		return
+		return uint64(l - j), true
 	}
-	return
+	return i, false
 }
 
 func (d *Decoder) maxTableIndex() int {