diff --git a/src/cli.rs b/src/cli.rs
index f0f6165a..5d03aa17 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -13,7 +13,8 @@ use crate::bat_utils::output::PagingMode;
 use crate::git_config::{GitConfig, GitConfigEntry};
 use crate::options;
 
-#[derive(StructOpt, Default)]
+// No Default trait as this ignores `default_value = ..`
+#[derive(StructOpt)]
 #[structopt(
     name = "delta",
     about = "A viewer for git and diff output",
diff --git a/src/subcommands/show_syntax_themes.rs b/src/subcommands/show_syntax_themes.rs
index cd489bb1..d7ecea76 100644
--- a/src/subcommands/show_syntax_themes.rs
+++ b/src/subcommands/show_syntax_themes.rs
@@ -15,7 +15,7 @@ pub fn show_syntax_themes() -> std::io::Result<()> {
     let mut output_type = OutputType::from_mode(
         PagingMode::QuitIfOneScreen,
         None,
-        &config::Config::from(cli::Opt::default()),
+        &config::Config::from(cli::Opt::from_args()),
     )
     .unwrap();
     let mut writer = output_type.handle().unwrap();