diff --git a/ssl/test/runner/common.go b/ssl/test/runner/common.go
index fd6ca71..4ac2341 100644
--- a/ssl/test/runner/common.go
+++ b/ssl/test/runner/common.go
@@ -535,11 +535,6 @@
 	// closed the connection) before or after sending app data.
 	AlertBeforeFalseStartTest alert
 
-	// SSL3RSAKeyExchange causes the client to always send an RSA
-	// ClientKeyExchange message without the two-byte length
-	// prefix, as if it were SSL3.
-	SSL3RSAKeyExchange bool
-
 	// SkipCipherVersionCheck causes the server to negotiate
 	// TLS 1.2 ciphers in earlier versions of TLS.
 	SkipCipherVersionCheck bool
diff --git a/ssl/test/runner/key_agreement.go b/ssl/test/runner/key_agreement.go
index 4a07ed7..f65ff6e 100644
--- a/ssl/test/runner/key_agreement.go
+++ b/ssl/test/runner/key_agreement.go
@@ -156,7 +156,7 @@
 		return nil, nil, err
 	}
 	ckx := new(clientKeyExchangeMsg)
-	if clientHello.vers != VersionSSL30 && !config.Bugs.SSL3RSAKeyExchange {
+	if clientHello.vers != VersionSSL30 {
 		ckx.ciphertext = make([]byte, len(encrypted)+2)
 		ckx.ciphertext[0] = byte(len(encrypted) >> 8)
 		ckx.ciphertext[1] = byte(len(encrypted))
diff --git a/ssl/test/runner/runner.go b/ssl/test/runner/runner.go
index befde86..afd23c9 100644
--- a/ssl/test/runner/runner.go
+++ b/ssl/test/runner/runner.go
@@ -3208,40 +3208,6 @@
 	}
 }
 
-func addD5BugTests() {
-	testCases = append(testCases, testCase{
-		testType: serverTest,
-		name:     "D5Bug-NoQuirk-Reject",
-		config: Config{
-			CipherSuites: []uint16{TLS_RSA_WITH_AES_128_GCM_SHA256},
-			Bugs: ProtocolBugs{
-				SSL3RSAKeyExchange: true,
-			},
-		},
-		shouldFail:    true,
-		expectedError: ":TLS_RSA_ENCRYPTED_VALUE_LENGTH_IS_WRONG:",
-	})
-	testCases = append(testCases, testCase{
-		testType: serverTest,
-		name:     "D5Bug-Quirk-Normal",
-		config: Config{
-			CipherSuites: []uint16{TLS_RSA_WITH_AES_128_GCM_SHA256},
-		},
-		flags: []string{"-tls-d5-bug"},
-	})
-	testCases = append(testCases, testCase{
-		testType: serverTest,
-		name:     "D5Bug-Quirk-Bug",
-		config: Config{
-			CipherSuites: []uint16{TLS_RSA_WITH_AES_128_GCM_SHA256},
-			Bugs: ProtocolBugs{
-				SSL3RSAKeyExchange: true,
-			},
-		},
-		flags: []string{"-tls-d5-bug"},
-	})
-}
-
 func addExtensionTests() {
 	testCases = append(testCases, testCase{
 		testType: clientTest,
@@ -4644,7 +4610,6 @@
 	addDDoSCallbackTests()
 	addVersionNegotiationTests()
 	addMinimumVersionTests()
-	addD5BugTests()
 	addExtensionTests()
 	addResumptionVersionTests()
 	addExtendedMasterSecretTests()