diff --git a/rollup.config.js b/rollup.config.js
index bec70c77..02c74105 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -39,8 +39,6 @@ export const baseConfig = ({ mainFile = pkg.main, moduleFile = pkg.module, injec
     replace({
       __ENV__: JSON.stringify(processEnv),
       __REACT_FLOW_VERSION__: JSON.stringify(pkg.version),
-      // this comes from the easy-peasy dependency
-      'process.env.FORCE_SIMILAR_INSTEAD_OF_MAP': false,
       preventAssignment: true,
     }),
     bundleSize(),