diff --git a/tests/reserve.rs b/tests/reserve.rs
index c220c1715..108620014 100644
--- a/tests/reserve.rs
+++ b/tests/reserve.rs
@@ -1,12 +1,17 @@
 use ndarray::prelude::*;
 
+fn into_raw_vec_capacity<T, D: Dimension>(a: Array<T, D>) -> usize
+{
+    a.into_raw_vec_and_offset().0.capacity()
+}
+
 #[test]
 fn reserve_1d()
 {
     let mut a = Array1::<i32>::zeros((4,));
     a.reserve(Axis(0), 1000).unwrap();
     assert_eq!(a.shape(), &[4]);
-    assert!(a.into_raw_vec().capacity() >= 1004);
+    assert!(into_raw_vec_capacity(a) >= 1004);
 }
 
 #[test]
@@ -15,7 +20,7 @@ fn reserve_3d()
     let mut a = Array3::<i32>::zeros((0, 4, 8));
     a.reserve(Axis(0), 10).unwrap();
     assert_eq!(a.shape(), &[0, 4, 8]);
-    assert!(a.into_raw_vec().capacity() >= 4 * 8 * 10);
+    assert!(into_raw_vec_capacity(a) >= 4 * 8 * 10);
 }
 
 #[test]
@@ -30,7 +35,7 @@ fn reserve_3d_axis1()
 {
     let mut a = Array3::<i32>::zeros((2, 4, 8));
     a.reserve(Axis(1), 10).unwrap();
-    assert!(a.into_raw_vec().capacity() >= 2 * 8 * 10);
+    assert!(into_raw_vec_capacity(a) >= 2 * 8 * 10);
 }
 
 #[test]
@@ -39,7 +44,7 @@ fn reserve_3d_repeat()
     let mut a = Array3::<i32>::zeros((2, 4, 8));
     a.reserve(Axis(1), 10).unwrap();
     a.reserve(Axis(2), 30).unwrap();
-    assert!(a.into_raw_vec().capacity() >= 2 * 4 * 30);
+    assert!(into_raw_vec_capacity(a) >= 2 * 4 * 30);
 }
 
 #[test]
@@ -48,7 +53,7 @@ fn reserve_2d_with_data()
     let mut a = array![[1, 2], [3, 4], [5, 6]];
     a.reserve(Axis(1), 100).unwrap();
     assert_eq!(a, array![[1, 2], [3, 4], [5, 6]]);
-    assert!(a.into_raw_vec().capacity() >= 3 * 100);
+    assert!(into_raw_vec_capacity(a) >= 3 * 100);
 }
 
 #[test]