diff --git a/lib/internal/util.js b/lib/internal/util.js
index 226a57ddda55b3..a574974682b0b3 100644
--- a/lib/internal/util.js
+++ b/lib/internal/util.js
@@ -35,6 +35,7 @@ const {
   SafeSet,
   SafeWeakMap,
   SafeWeakRef,
+  StringPrototypeIncludes,
   StringPrototypeReplace,
   StringPrototypeToLowerCase,
   StringPrototypeToUpperCase,
@@ -476,7 +477,7 @@ function spliceOne(list, index) {
   list.pop();
 }
 
-const kNodeModulesRE = /^(.*)[\\/]node_modules[\\/]/;
+const kNodeModulesRE = /^(?:.*)[\\/]node_modules[\\/]/;
 
 let getStructuredStack;
 
@@ -488,13 +489,13 @@ function isInsideNodeModules() {
     // side-effect-free. Since this is currently only used for a deprecated API,
     // the perf implications should be okay.
     getStructuredStack = runInNewContext(`(function() {
-      try { Error.stackTraceLimit = Infinity; } catch {}
-      return function structuredStack() {
-        const e = new Error();
-        overrideStackTrace.set(e, (err, trace) => trace);
-        return e.stack;
-      };
-    })()`, { overrideStackTrace }, { filename: 'structured-stack' });
+        try { Error.stackTraceLimit = Infinity; } catch {}
+        return function structuredStack() {
+          const e = new Error();
+          overrideStackTrace.set(e, (err, trace) => trace);
+          return e.stack;
+        };
+      })()`, { overrideStackTrace }, { filename: 'structured-stack' });
   }
 
   const stack = getStructuredStack();
@@ -506,8 +507,10 @@ function isInsideNodeModules() {
       const filename = frame.getFileName();
       // If a filename does not start with / or contain \,
       // it's likely from Node.js core.
-      if (RegExpPrototypeExec(/^\/|\\/, filename) === null)
+      if (
+        filename[0] !== '/' || !StringPrototypeIncludes(filename, '\\')) {
         continue;
+      }
       return RegExpPrototypeExec(kNodeModulesRE, filename) !== null;
     }
   }