diff --git a/packages/mitmproxy/src/lib/proxy/tls/CertAndKeyContainer.js b/packages/mitmproxy/src/lib/proxy/tls/CertAndKeyContainer.js
index d034436c..036442b6 100644
--- a/packages/mitmproxy/src/lib/proxy/tls/CertAndKeyContainer.js
+++ b/packages/mitmproxy/src/lib/proxy/tls/CertAndKeyContainer.js
@@ -45,7 +45,7 @@ module.exports = class CertAndKeyContainer {
       const _resolve = (_certObj) => {
         if (once) {
           once = false
-          const mappingHostNames = tlsUtils.getMappingHostNamesFormCert(_certObj.cert)
+          const mappingHostNames = tlsUtils.getMappingHostNamesFromCert(_certObj.cert)
           certPromiseObj.mappingHostNames = mappingHostNames // change
           resolve(_certObj)
         }
diff --git a/packages/mitmproxy/src/lib/proxy/tls/FakeServersCenter.js b/packages/mitmproxy/src/lib/proxy/tls/FakeServersCenter.js
index 2e899ab0..a7fe8d30 100644
--- a/packages/mitmproxy/src/lib/proxy/tls/FakeServersCenter.js
+++ b/packages/mitmproxy/src/lib/proxy/tls/FakeServersCenter.js
@@ -90,7 +90,7 @@ module.exports = class FakeServersCenter {
           log.error(e)
         })
         fakeServer.on('listening', () => {
-          const mappingHostNames = tlsUtils.getMappingHostNamesFormCert(certObj.cert)
+          const mappingHostNames = tlsUtils.getMappingHostNamesFromCert(certObj.cert)
           serverPromiseObj.mappingHostNames = mappingHostNames
           resolve(serverObj)
         })
diff --git a/packages/mitmproxy/src/lib/proxy/tls/tlsUtils.js b/packages/mitmproxy/src/lib/proxy/tls/tlsUtils.js
index d0b42ede..4c75cecb 100644
--- a/packages/mitmproxy/src/lib/proxy/tls/tlsUtils.js
+++ b/packages/mitmproxy/src/lib/proxy/tls/tlsUtils.js
@@ -230,7 +230,7 @@ utils.isMappingHostName = function (DNSName, hostname) {
   return (new RegExp(reg)).test(hostname)
 }
 
-utils.getMappingHostNamesFormCert = function (cert) {
+utils.getMappingHostNamesFromCert = function (cert) {
   let mappingHostNames = []
   mappingHostNames.push(cert.subject.getField('CN') ? cert.subject.getField('CN').value : '')
   const altNames = cert.getExtension('subjectAltName') ? cert.getExtension('subjectAltName').altNames : []