diff --git a/var/spack/repos/builtin/packages/gettext/package.py b/var/spack/repos/builtin/packages/gettext/package.py
index 27165da5b45..8076ccb8419 100644
--- a/var/spack/repos/builtin/packages/gettext/package.py
+++ b/var/spack/repos/builtin/packages/gettext/package.py
@@ -51,7 +51,7 @@ def configure_args(self):
 
         config_args = [
             '--disable-java',
-            '--disable-icsharp',
+            '--disable-csharp',
             '--with-libiconv-prefix={0}'.format(spec['iconv'].prefix),
             '--with-included-glib',
             '--with-included-gettext',