diff --git a/lib/rules/prefer-regex-literals.js b/lib/rules/prefer-regex-literals.js
index eca2eaa3e39..0c31a995631 100644
--- a/lib/rules/prefer-regex-literals.js
+++ b/lib/rules/prefer-regex-literals.js
@@ -12,6 +12,7 @@
 const astUtils = require("./utils/ast-utils");
 const { CALL, CONSTRUCT, ReferenceTracker, findVariable, getStaticValue } = require("eslint-utils");
 const { validateRegExpLiteral } = require("regexpp");
+const { canTokensBeAdjacent } = require("./utils/ast-utils");
 
 //------------------------------------------------------------------------------
 // Helpers
@@ -312,9 +313,13 @@ module.exports = {
                             messageId: "unexpectedRegExp",
                             ...(noFix ? {} : {
                                 fix(fixer) {
+                                    const tokenAfter = sourceCode.getTokenAfter(node);
+
                                     return fixer.replaceTextRange(
                                         node.range,
-                                        (text[node.range[0] - 1] === "/" ? " " : "") + newRegExpValue + (["in", "instanceof"].includes((sourceCode.getTokenAfter(node) || {}).value) && text[node.range[1]] === "i" ? " " : "")
+                                        (tokenBefore && !canTokensBeAdjacent(tokenBefore, newRegExpValue) && /\S/u.test(text[node.range[0] - 1]) ? " " : "") +
+                                            newRegExpValue +
+                                            (tokenAfter && !canTokensBeAdjacent(newRegExpValue, tokenAfter) && /\S/u.test(text[node.range[1]]) ? " " : "")
                                     );
                                 }
                             })