diff --git a/src/param/boolean.rs b/src/param/boolean.rs
index 1c9fb096..4ef10976 100644
--- a/src/param/boolean.rs
+++ b/src/param/boolean.rs
@@ -34,22 +34,6 @@ pub struct BoolParam {
     string_to_value: Option<Arc<dyn Fn(&str) -> Option<bool> + Send + Sync>>,
 }
 
-#[allow(clippy::derivable_impls)]
-impl Default for BoolParam {
-    fn default() -> Self {
-        Self {
-            value: false,
-            normalized_value: 0.0,
-            default: false,
-            flags: ParamFlags::default(),
-            value_changed: None,
-            name: String::new(),
-            value_to_string: None,
-            string_to_value: None,
-        }
-    }
-}
-
 impl Display for BoolParam {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match (self.value, &self.value_to_string) {
@@ -165,9 +149,15 @@ impl BoolParam {
     pub fn new(name: impl Into<String>, default: bool) -> Self {
         Self {
             value: default,
+            normalized_value: if default { 1.0 } else { 0.0 },
             default,
+
+            flags: ParamFlags::default(),
+            value_changed: None,
+
             name: name.into(),
-            ..Default::default()
+            value_to_string: None,
+            string_to_value: None,
         }
     }
 
diff --git a/src/param/enums.rs b/src/param/enums.rs
index 964e5a4c..80031901 100644
--- a/src/param/enums.rs
+++ b/src/param/enums.rs
@@ -65,27 +65,6 @@ pub struct EnumParamInner {
     variants: &'static [&'static str],
 }
 
-impl<T: Enum + PartialEq + Default> Default for EnumParam<T> {
-    fn default() -> Self {
-        let variants = T::variants();
-
-        Self {
-            inner: EnumParamInner {
-                inner: IntParam::new(
-                    "",
-                    T::default().to_index() as i32,
-                    IntRange::Linear {
-                        min: 0,
-                        max: variants.len() as i32 - 1,
-                    },
-                ),
-                variants,
-            },
-            _marker: PhantomData,
-        }
-    }
-}
-
 impl<T: Enum + PartialEq> Display for EnumParam<T> {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         self.inner.fmt(f)
diff --git a/src/param/float.rs b/src/param/float.rs
index 680a60bd..65c29b22 100644
--- a/src/param/float.rs
+++ b/src/param/float.rs
@@ -65,25 +65,6 @@ pub struct FloatParam {
     string_to_value: Option<Arc<dyn Fn(&str) -> Option<f32> + Send + Sync>>,
 }
 
-impl Default for FloatParam {
-    fn default() -> Self {
-        Self {
-            value: 0.0,
-            normalized_value: 0.0,
-            default: 0.0,
-            smoothed: Smoother::none(),
-            flags: ParamFlags::default(),
-            value_changed: None,
-            range: FloatRange::default(),
-            step_size: None,
-            name: String::new(),
-            unit: "",
-            value_to_string: None,
-            string_to_value: None,
-        }
-    }
-}
-
 impl Display for FloatParam {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match (&self.value_to_string, &self.step_size) {
@@ -235,9 +216,17 @@ impl FloatParam {
             value: default,
             normalized_value: range.normalize(default),
             default,
+            smoothed: Smoother::none(),
+
+            flags: ParamFlags::default(),
+            value_changed: None,
+
             range,
+            step_size: None,
             name: name.into(),
-            ..Default::default()
+            unit: "",
+            value_to_string: None,
+            string_to_value: None,
         }
     }
 
diff --git a/src/param/integer.rs b/src/param/integer.rs
index 2d73382f..e244324c 100644
--- a/src/param/integer.rs
+++ b/src/param/integer.rs
@@ -61,24 +61,6 @@ pub struct IntParam {
     string_to_value: Option<Arc<dyn Fn(&str) -> Option<i32> + Send + Sync>>,
 }
 
-impl Default for IntParam {
-    fn default() -> Self {
-        Self {
-            value: 0,
-            normalized_value: 0.0,
-            default: 0,
-            smoothed: Smoother::none(),
-            flags: ParamFlags::default(),
-            value_changed: None,
-            range: IntRange::default(),
-            name: String::new(),
-            unit: "",
-            value_to_string: None,
-            string_to_value: None,
-        }
-    }
-}
-
 impl Display for IntParam {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match &self.value_to_string {
@@ -199,9 +181,16 @@ impl IntParam {
             value: default,
             normalized_value: range.normalize(default),
             default,
+            smoothed: Smoother::none(),
+
+            flags: ParamFlags::default(),
+            value_changed: None,
+
             range,
             name: name.into(),
-            ..Default::default()
+            unit: "",
+            value_to_string: None,
+            string_to_value: None,
         }
     }