diff --git a/lib/current-env.js b/lib/current-env.js
index 9babde1..cf5e886 100644
--- a/lib/current-env.js
+++ b/lib/current-env.js
@@ -13,12 +13,16 @@ function cpu () {
   return process.arch
 }
 
+let family
+
 function libc (osName) {
   // this is to make it faster on non linux machines
   if (osName !== 'linux') {
     return undefined
   }
-  let family
+  if (family) {
+    return family
+  }
   const originalExclude = process.report.excludeNetwork
   process.report.excludeNetwork = true
   const report = process.report.getReport()