diff --git a/clippy_lints/src/tuple_array_conversions.rs b/clippy_lints/src/tuple_array_conversions.rs
index 78ad52d8a8794..c12519d723c08 100644
--- a/clippy_lints/src/tuple_array_conversions.rs
+++ b/clippy_lints/src/tuple_array_conversions.rs
@@ -189,8 +189,8 @@ fn all_bindings_are_for_conv<'tcx>(
                     tys.len() == elements.len() && tys.iter().chain(final_tys.iter().copied()).all_equal()
                 },
                 (ToType::Tuple, ty::Array(ty, len)) => {
-                    len.eval_target_usize(cx.tcx, cx.param_env) as usize == elements.len()
-                        && final_tys.iter().chain(once(ty)).all_equal()
+                    let Some(len) = len.try_eval_target_usize(cx.tcx, cx.param_env) else { return false };
+                    len as usize == elements.len() && final_tys.iter().chain(once(ty)).all_equal()
                 },
                 _ => false,
             }
diff --git a/tests/ui/tuple_array_conversions.rs b/tests/ui/tuple_array_conversions.rs
index ed21ee668e3a0..ca79cc104f223 100644
--- a/tests/ui/tuple_array_conversions.rs
+++ b/tests/ui/tuple_array_conversions.rs
@@ -82,6 +82,11 @@ fn main() {
     [a, c];
     let [[a, b], [c, d]] = [[1, 2], [3, 4]];
     (a, c);
+    // Array length is not usize (#11144)
+    fn generic_array_length<const N: usize>() {
+        let src = [0; N];
+        let dest: (u8,) = (src[0],);
+    }
 }
 
 #[clippy::msrv = "1.70.0"]
diff --git a/tests/ui/tuple_array_conversions.stderr b/tests/ui/tuple_array_conversions.stderr
index 50bdcf29d1fad..70c13d10fd875 100644
--- a/tests/ui/tuple_array_conversions.stderr
+++ b/tests/ui/tuple_array_conversions.stderr
@@ -64,7 +64,7 @@ LL |     (src, dest);
    = help: use `.into()` instead, or `<(T0, T1, ..., Tn)>::from` if type annotations are needed
 
 error: it looks like you're trying to convert an array to a tuple
-  --> $DIR/tuple_array_conversions.rs:99:13
+  --> $DIR/tuple_array_conversions.rs:104:13
    |
 LL |     let x = (x[0], x[1]);
    |             ^^^^^^^^^^^^
@@ -72,7 +72,7 @@ LL |     let x = (x[0], x[1]);
    = help: use `.into()` instead, or `<(T0, T1, ..., Tn)>::from` if type annotations are needed
 
 error: it looks like you're trying to convert a tuple to an array
-  --> $DIR/tuple_array_conversions.rs:100:13
+  --> $DIR/tuple_array_conversions.rs:105:13
    |
 LL |     let x = [x.0, x.1];
    |             ^^^^^^^^^^