diff --git a/g_code/src/config/mod.rs b/g_code/src/config/mod.rs
index 3cc9f19..53a61c3 100644
--- a/g_code/src/config/mod.rs
+++ b/g_code/src/config/mod.rs
@@ -23,6 +23,7 @@ mod v5;
 
 /// A cross-platform type used to store all configuration types.
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(default))]
 #[derive(Debug, Default, Clone, PartialEq)]
 pub struct Settings {
     pub conversion: GCodeConfig,
@@ -33,6 +34,7 @@ pub struct Settings {
 }
 
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(default))]
 #[derive(Debug, Default, Clone, PartialEq)]
 pub struct MachineConfig {
     pub supported_functionality: SupportedFunctionality,
@@ -43,6 +45,7 @@ pub struct MachineConfig {
 }
 
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(default))]
 #[derive(Debug, Clone, PartialEq)]
 pub struct GCodeConfig {
     #[cfg_attr(feature = "serde", serde(flatten))]
@@ -63,6 +66,7 @@ impl Default for GCodeConfig {
 
 #[derive(Debug, Default, Clone, PartialEq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(default))]
 pub struct SupportedFunctionality {
     /// Indicates support for G2/G3 circular interpolation.
     ///
@@ -71,17 +75,15 @@ pub struct SupportedFunctionality {
 }
 
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(default))]
 #[derive(Debug, Default, Clone, PartialEq)]
 /// Operations performed after G-Code generation.
 pub struct PostprocessConfig {
     /// Convenience field for [g_code::emit::FormatOptions] field
-    #[cfg_attr(feature = "serde", serde(default))]
     pub checksums: bool,
     /// Convenience field for [g_code::emit::FormatOptions] field
-    #[cfg_attr(feature = "serde", serde(default))]
     pub line_numbers: bool,
     /// Convenience field for [g_code::emit::FormatOptions] field
-    #[cfg_attr(feature = "serde", serde(default))]
     pub newline_before_comment: bool,
 }
 
diff --git a/star/src/lower/mod.rs b/star/src/lower/mod.rs
index 9b91093..f9c337f 100644
--- a/star/src/lower/mod.rs
+++ b/star/src/lower/mod.rs
@@ -30,23 +30,21 @@ mod visit;
 /// High-level output configuration
 #[derive(Debug, Clone, PartialEq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "serde", serde(default))]
 pub struct ConversionConfig {
     /// Dots per inch for pixels, picas, points, etc.
     pub dpi: f64,
     /// Set the origin point in millimeters for this conversion
-    #[cfg_attr(feature = "serde", serde(default = "zero_origin"))]
     pub origin: [Option<f64>; 2],
     /// Set extra attribute to add when printing node name
     pub extra_attribute_name: Option<String>,
     /// Reorder paths to minimize travel time
-    #[cfg_attr(feature = "serde", serde(default))]
     pub optimize_path_order: bool,
     /// CSS selector to filter which SVG elements are converted.
     ///
     /// Only the `:not`, `:is`, and `:has` pseudo classes are supported.
     ///
     /// <https://developer.mozilla.org/en-US/docs/Web/CSS/Guides/Selectors>
-    #[cfg_attr(feature = "serde", serde(default))]
     pub selector_filter: Option<String>,
     pub starting_point: [Option<f64>; 2],
 }