diff --git a/core/codegen/src/lib.rs b/core/codegen/src/lib.rs
index 8dda9388..273f1b9e 100644
--- a/core/codegen/src/lib.rs
+++ b/core/codegen/src/lib.rs
@@ -564,7 +564,7 @@ pub fn launch(args: TokenStream, input: TokenStream) -> TokenStream {
 ///
 /// The attribute accepts a single string parameter of name `value`
 /// corresponding to the string to use to match against for the decorated
-/// variant. In the example above, the the strings `"fourth"`, `"FOUrth"`,
+/// variant. In the example above, the strings `"fourth"`, `"FOUrth"`,
 /// `"fiFTH"` and so on would parse as `MyValue::Third`.
 ///
 /// [`FromFormField`]: ../rocket/form/trait.FromFormField.html
diff --git a/core/lib/src/catcher/catcher.rs b/core/lib/src/catcher/catcher.rs
index de996205..3337c609 100644
--- a/core/lib/src/catcher/catcher.rs
+++ b/core/lib/src/catcher/catcher.rs
@@ -14,7 +14,7 @@ use yansi::Paint;
 ///
 /// Catchers are routes that run when errors are produced by the application.
 /// They consist of a [`Handler`] and an optional status code to match against
-/// arising errors. Errors arise from the the following sources:
+/// arising errors. Errors arise from the following sources:
 ///
 ///   * A failing guard.
 ///   * A failing responder.
@@ -218,7 +218,7 @@ impl Catcher {
 
     /// Prefix `base` to the current `base` in `self.`
     ///
-    /// If the the current base is `/`, then the base is replaced by `base`.
+    /// If the current base is `/`, then the base is replaced by `base`.
     /// Otherwise, `base` is prefixed to the existing `base`.
     ///
     /// ```rust
diff --git a/core/lib/src/route/route.rs b/core/lib/src/route/route.rs
index e78275b9..bf8679f1 100644
--- a/core/lib/src/route/route.rs
+++ b/core/lib/src/route/route.rs
@@ -258,7 +258,7 @@ impl Route {
 
     /// Prefix `base` to any existing mount point base in `self`.
     ///
-    /// If the the current mount point base is `/`, then the base is replaced by
+    /// If the current mount point base is `/`, then the base is replaced by
     /// `base`. Otherwise, `base` is prefixed to the existing `base`.
     ///
     /// ```rust