diff --git a/docs/source/commandline.md b/docs/source/commandline.md
index a3a242df17..db994e03e1 100644
--- a/docs/source/commandline.md
+++ b/docs/source/commandline.md
@@ -926,7 +926,7 @@ from npm to your `node_modules` directory and save its usage in your
 Using the `meteor npm ...` commands in place of traditional `npm ...` commands
 is particularly important when using Node.js modules that have binary
 dependencies that make native C calls (like [`bcrypt`](https://www.npmjs.com/package/bcrypt))
-because doing so ensures that they are built using the same libaries.
+because doing so ensures that they are built using the same libraries.
 
 Additionally, this access to the npm that comes with Meteor avoids the need to
 download and install npm separately.
diff --git a/tools/isobuild/compiler-deprecated-compile-step.js b/tools/isobuild/compiler-deprecated-compile-step.js
index fe3b9c76c8..0fad0c671d 100644
--- a/tools/isobuild/compiler-deprecated-compile-step.js
+++ b/tools/isobuild/compiler-deprecated-compile-step.js
@@ -1,7 +1,7 @@
 // This file contains an old definition of CompileStep, an object that is passed
 // to the package-provided file handler.
 // Since then, the newer API called "Batch Plugins" have replaced it but we keep
-// the functionality for the backwards-compitability.
+// the functionality for the backwards-compatibility.
 // @deprecated
 // XXX COMPAT WITH 1.1.0.2
 
diff --git a/tools/utils/buildmessage.js b/tools/utils/buildmessage.js
index 0d468624c1..48cbec19c4 100644
--- a/tools/utils/buildmessage.js
+++ b/tools/utils/buildmessage.js
@@ -75,7 +75,7 @@ Object.assign(Job.prototype, {
         }
         line += ": ";
       } else {
-        // not sure how to display messages without a filenanme.. try this?
+        // not sure how to display messages without a file name.. try this?
         line += "error: ";
       }
       // XXX line wrapping would be nice..