diff --git a/build/tasks/mkrpm-task.coffee b/build/tasks/mkrpm-task.coffee
index c11e62f69..eb4fd5847 100644
--- a/build/tasks/mkrpm-task.coffee
+++ b/build/tasks/mkrpm-task.coffee
@@ -28,8 +28,8 @@ module.exports = (grunt) ->
     # RPM versions can't have dashes in them.
     # * http://www.rpm.org/max-rpm/ch-rpm-file-format.html
     # * https://github.com/mojombo/semver/issues/145
-    version = version.replace(/-beta$/, "~beta")
-    version = version.replace(/-dev$/, "~dev")
+    version = version.replace(/-beta/, "~beta")
+    version = version.replace(/-dev/, "~dev")
 
     buildDir = grunt.config.get('atom.buildDir')