diff --git a/test/compress/concat-strings.js b/test/compress/concat-strings.js
index a9957d3d6..0decac2ab 100644
--- a/test/compress/concat-strings.js
+++ b/test/compress/concat-strings.js
@@ -12,7 +12,7 @@ concat_1: {
 
         var e = 1 + x() + 2 + "X" + 3 + "boo";
 
-        // be careful with concatentation with "\0" with octal-looking strings.
+        // be careful with concatenation with "\0" with octal-looking strings.
         var f = "\0" + 360 + "\0" + 8 + "\0";
     }
     expect: {
diff --git a/test/compress/template-string.js b/test/compress/template-string.js
index 61306b5a2..eb6f500c3 100644
--- a/test/compress/template-string.js
+++ b/test/compress/template-string.js
@@ -119,7 +119,7 @@ template_string_with_predefined_constants: {
         var barber = 'This is ${0/0}';
 
         var a = "4194304";
-        var b = "16777216"; // Potential for further concatentation
+        var b = "16777216"; // Potential for further concatenation
         var c = `${4**14}`; // Not worth converting
     }
 }