diff --git a/ssl/test/runner/handshake_server.go b/ssl/test/runner/handshake_server.go
index 9b4bff8..64edd01 100644
--- a/ssl/test/runner/handshake_server.go
+++ b/ssl/test/runner/handshake_server.go
@@ -342,19 +342,23 @@
 		}
 	}
 
-	if config.Bugs.IgnorePeerSignatureAlgorithmPreferences {
-		hs.clientHello.signatureAlgorithms = config.signSignatureAlgorithms()
-	}
-	if config.Bugs.IgnorePeerCurvePreferences {
-		hs.clientHello.supportedCurves = config.curvePreferences()
-	}
-	if config.Bugs.IgnorePeerCipherPreferences {
-		hs.clientHello.cipherSuites = config.cipherSuites()
-	}
+	applyBugsToClientHello(hs.clientHello, config)
 
 	return nil
 }
 
+func applyBugsToClientHello(clientHello *clientHelloMsg, config *Config) {
+	if config.Bugs.IgnorePeerSignatureAlgorithmPreferences {
+		clientHello.signatureAlgorithms = config.signSignatureAlgorithms()
+	}
+	if config.Bugs.IgnorePeerCurvePreferences {
+		clientHello.supportedCurves = config.curvePreferences()
+	}
+	if config.Bugs.IgnorePeerCipherPreferences {
+		clientHello.cipherSuites = config.cipherSuites()
+	}
+}
+
 func (hs *serverHandshakeState) doTLS13Handshake() error {
 	c := hs.c
 	config := c.config
@@ -587,6 +591,8 @@
 		}
 		hs.writeClientHash(newClientHello.marshal())
 
+		applyBugsToClientHello(newClientHello, config)
+
 		// Check that the new ClientHello matches the old ClientHello,
 		// except for relevant modifications.
 		//