diff --git a/README.md b/README.md
index c1f2973e3..c6cc30ac8 100644
--- a/README.md
+++ b/README.md
@@ -168,7 +168,7 @@ lodash settings="{interpolate:/\{\{([\s\S]+?)\}\}/g}"
 lodash moduleId="underscore"
 ```
 
-All arguments, except `legacy` with `mobile`, `modern`, or `underscore`, may be combined.<br>
+All arguments, except `backbone`, `csp`, `legacy`, `mobile`, `modern`, and `underscore`, may be combined.<br>
 Unless specified by `-o` or `--output`, all files created are saved to the current working directory.
 
 The following options are also supported:
diff --git a/build.js b/build.js
index 7eb916857..6caf82e9f 100644
--- a/build.js
+++ b/build.js
@@ -1150,7 +1150,7 @@
       '                         (e.g. `lodash settings="{interpolate:/{{([\\s\\S]+?)}}/g}"`)',
       '    lodash moduleId=...  The AMD module ID of Lo-Dash, which defaults to “lodash”, used by precompiled templates',
       '',
-      '    All arguments, except `backbone`, `legacy`, `mobile`, `modern`, and `underscore`, may be combined.',
+      '    All arguments, except `backbone`, `csp`, `legacy`, `mobile`, `modern`, and `underscore`, may be combined.',
       '    Unless specified by `-o` or `--output`, all files created are saved to the current working directory.',
       '',
       '  Options:',
@@ -2650,7 +2650,7 @@
       warnings.push('Invalid argument' + (invalidArgs.length > 1 ? 's' : '') + ' passed: ' + invalidArgs.join(', '));
     }
     // report invalid command combinations
-    invalidArgs = _.intersection(options, ['backbone', 'legacy', 'mobile', 'modern', 'underscore']);
+    invalidArgs = _.intersection(options, ['backbone', 'csp', 'legacy', 'mobile', 'modern', 'underscore']);
 
     if (isTemplate) {
       invalidArgs.push('template');
diff --git a/test/test-build.js b/test/test-build.js
index 9ffae8c45..1cd5ed935 100644
--- a/test/test-build.js
+++ b/test/test-build.js
@@ -505,6 +505,7 @@
     });
 
     commands = [
+      'csp backbone',
       'mobile underscore',
       'modern template=./*.jst'
     ];
@@ -1646,7 +1647,7 @@
       })
     );
 
-    var reNonCombinable = /\b(?:backbone|legacy|mobile|modern|underscore)\b/;
+    var reNonCombinable = /\b(?:backbone|csp|legacy|mobile|modern|underscore)\b/;
 
     commands.forEach(function(origCommand) {
       _.each(['', 'mobile', 'modern', 'underscore'], function(otherCommand) {