diff --git a/modeling-cmds/src/def_enum.rs b/modeling-cmds/src/def_enum.rs
index 26d98390..64adf73f 100644
--- a/modeling-cmds/src/def_enum.rs
+++ b/modeling-cmds/src/def_enum.rs
@@ -403,8 +403,7 @@ define_modeling_cmd_enum! {
             pub cylinder_id: Uuid,
             /// Number of revolutions.
             pub revolutions: f64,
-            /// Start angle.
-            #[serde(default)]
+            /// Start angle (in degrees).
             pub start_angle: Angle,
             /// Is the helix rotation clockwise?
             pub is_clockwise: bool,
@@ -412,26 +411,6 @@ define_modeling_cmd_enum! {
             pub length: LengthUnit,
         }
 
-        /// Create a helix using the specified parameters.
-        #[derive(Debug, Clone, Serialize, Deserialize, JsonSchema, ModelingCmdVariant)]
-        pub struct EntityMakeHelixFromParams {
-            /// Radius of the helix.
-            pub radius: f64,
-            /// Length of the helix.
-            pub length: LengthUnit,
-            /// Number of revolutions.
-            pub revolutions: f64,
-            /// Start angle.
-            #[serde(default)]
-            pub start_angle: Angle,
-            /// Is the helix rotation clockwise?
-            pub is_clockwise: bool,
-            /// Center of the helix at the base of the helix.
-            pub center: Point3d<LengthUnit>,
-            /// Axis of the helix. The helix will be created around and in the direction of this axis.
-            pub axis: Point3d<f64>,
-        }
-
         /// Mirror the input entities over the specified axis. (Currently only supports sketches)
         #[derive(Debug, Clone, Serialize, Deserialize, JsonSchema, ModelingCmdVariant)]
         pub struct EntityMirror {
diff --git a/modeling-cmds/src/ok_response.rs b/modeling-cmds/src/ok_response.rs
index 7b9dd787..659f0633 100644
--- a/modeling-cmds/src/ok_response.rs
+++ b/modeling-cmds/src/ok_response.rs
@@ -89,11 +89,6 @@ define_ok_modeling_cmd_response_enum! {
         pub struct EntityMakeHelix {
         }
 
-        /// The response from the `EntityMakeHelixFromParams` endpoint.
-        #[derive(Debug, Serialize, Deserialize, Clone, JsonSchema, ModelingCmdOutput)]
-        pub struct EntityMakeHelixFromParams {
-        }
-
         /// The response from the `EntityMirror` endpoint.
         #[derive(Debug, Serialize, Deserialize, Clone, JsonSchema, ModelingCmdOutput)]
         pub struct EntityMirror {