diff --git a/index.js b/index.js
index 543e076..b386ee6 100644
--- a/index.js
+++ b/index.js
@@ -202,7 +202,7 @@ switch(params._[0]) {
     default: // Run monitor
 
         if (!params.M && os.totalmem() < 4294967296) {
-            throw new Error("You need 4GB or RAM to run BGPalerter");
+            throw new Error("You need 4GB of RAM to run BGPalerter");
         }
 
         global.DRY_RUN = !!params.t;