diff --git a/src/context.rs b/src/context.rs
index 1331f5d..e91eeb1 100644
--- a/src/context.rs
+++ b/src/context.rs
@@ -61,7 +61,7 @@ pub mod global {
 
 
 /// A trait for all kinds of contexts that lets you define the exact flags and a function to
-/// deallocate memory. It shouldn't be possible to implement this for types outside this crate.
+/// deallocate memory. It isn't possible to implement this for types outside this crate.
 pub unsafe trait Context : private::Sealed {
     /// Flags for the ffi.
     const FLAGS: c_uint;