diff --git a/Sources/Controls/Control.swift b/Sources/Controls/Control.swift
index f13cb1a..4b27cab 100644
--- a/Sources/Controls/Control.swift
+++ b/Sources/Controls/Control.swift
@@ -69,7 +69,7 @@ public struct Control<Content: View>: View {
             .onAppear {
                 rect = proxy.frame(in: .local)
             }
-            .onChange(of: proxy.size) { newValue in
+            .onChange(of: proxy.size) {
                 rect = proxy.frame(in: .local)
             }
         }
diff --git a/Sources/Controls/Implementations/IndexedSlider.swift b/Sources/Controls/Implementations/IndexedSlider.swift
index cdecaa9..df59327 100644
--- a/Sources/Controls/Implementations/IndexedSlider.swift
+++ b/Sources/Controls/Implementations/IndexedSlider.swift
@@ -40,8 +40,8 @@ public struct IndexedSlider: View {
                 .offset(x: CGFloat(index) * geo.size.width / CGFloat(labels.count))
                 .animation(.easeOut, value: index)
             }
-        }.onChange(of: normalValue) { newValue in
-            index = Int(newValue * 0.99 * Float(labels.count))
+        }.onChange(of: normalValue) {
+            index = Int(normalValue * 0.99 * Float(labels.count))
         }
     }
 }
diff --git a/Sources/Controls/TwoParameterControl.swift b/Sources/Controls/TwoParameterControl.swift
index 46c8402..13a4edd 100644
--- a/Sources/Controls/TwoParameterControl.swift
+++ b/Sources/Controls/TwoParameterControl.swift
@@ -77,7 +77,7 @@ public struct TwoParameterControl<Content: View>: View {
             .onAppear {
                 rect = proxy.frame(in: .local)
             }
-            .onChange(of: proxy.size) { newValue in
+            .onChange(of: proxy.size) {
                 rect = proxy.frame(in: .local)
             }
         }