diff --git a/index.js b/index.js
index fb4805dd..2a25793e 100644
--- a/index.js
+++ b/index.js
@@ -1 +1,4 @@
-module.exports = require(`./lib${process.env.FLUENTFFMPEG_COV ? '-cov' : ''}/fluent-ffmpeg`);
+const isCov =
+  process.env.FLUENTFFMPEG_COV === "1" ||
+  process.env.FLUENTFFMPEG_COV === "true";
+module.exports = require(`./lib${isCov ? "-cov" : ""}/fluent-ffmpeg`);