diff --git a/config/software/openssl.rb b/config/software/openssl.rb
index a2469a7f5..bf2c73cec 100644
--- a/config/software/openssl.rb
+++ b/config/software/openssl.rb
@@ -104,7 +104,7 @@
     "shared",
   ]
 
-  configure_args += "no-devcryptoeng" if freebsd?
+  configure_args += ["no-devcryptoeng"] if freebsd?
 
   configure_args += ["--libdir=#{install_dir}/embedded/lib"] if version.satisfies?(">=3.0.1")