diff --git a/Sources/Adwaita/Model/Extensions/Int.swift b/Sources/Adwaita/Model/Extensions/Int.swift
index 580036b..3a40f74 100644
--- a/Sources/Adwaita/Model/Extensions/Int.swift
+++ b/Sources/Adwaita/Model/Extensions/Int.swift
@@ -11,7 +11,7 @@ extension Int: Identifiable {
     public var id: Int { self }
     /// The C integer.
     public var cInt: Int32 {
-        .init(self)
+        .init(truncatingIfNeeded: self)
     }
 
 }
diff --git a/Sources/Adwaita/Model/Extensions/UInt.swift b/Sources/Adwaita/Model/Extensions/UInt.swift
index e417c3d..2648a59 100644
--- a/Sources/Adwaita/Model/Extensions/UInt.swift
+++ b/Sources/Adwaita/Model/Extensions/UInt.swift
@@ -9,7 +9,7 @@ extension UInt {
 
     /// Convert an unsigned integer into the C form.
     public var cInt: UInt32 {
-        .init(self)
+        .init(truncatingIfNeeded: self)
     }
 
 }