diff --git a/graphics/rubygem-captcha/Makefile b/graphics/rubygem-captcha/Makefile
index 154f5e1fbca9..5bf5b000db07 100644
--- a/graphics/rubygem-captcha/Makefile
+++ b/graphics/rubygem-captcha/Makefile
@@ -13,6 +13,7 @@ LICENSE=	MIT
 
 RUN_DEPENDS=	rubygem-rmagick>=2.9.2:${PORTSDIR}/graphics/rubygem-rmagick
 
+NO_ARCH=	yes
 USE_RUBY=	yes
 USE_RUBYGEMS=	yes
 RUBYGEM_AUTOPLIST=	yes