diff --git a/lib/source.js b/lib/source.js
index c4233e63..e573d1b4 100644
--- a/lib/source.js
+++ b/lib/source.js
@@ -206,10 +206,10 @@ function originalPositionTryBoth (sourceMap, line, column) {
   return original
 }
 
-// Not required since Node 13, see: https://github.com/nodejs/node/pull/27375
-const isPrerNode13 = /^v1[0-2]\./u.test(process.version)
+// Not required since Node 12, see: https://github.com/nodejs/node/pull/27375
+const isPreNode12 = /^v1[0-1]\./u.test(process.version)
 function getShebangLength (source) {
-  if (isPrerNode13 && source.indexOf('#!') === 0) {
+  if (isPreNode12 && source.indexOf('#!') === 0) {
     const match = source.match(/(?<shebang>#!.*)/)
     if (match) {
       return match.groups.shebang.length
diff --git a/test/fixtures/shebang.js b/test/fixtures/shebang.js
index 124f2e57..63355def 100644
--- a/test/fixtures/shebang.js
+++ b/test/fixtures/shebang.js
@@ -1,6 +1,6 @@
 module.exports = {
   describe: 'shebang',
-  maxNodeVersion: 'v13.0.0',
+  maxNodeVersion: 'v12.0.0',
   coverageV8: {
     "scriptId": "56",
     "url": "./test/fixtures/scripts/shebang.js",