diff --git a/tests/test_sort.rs b/tests/test_sort.rs
index 9c6ccff71..18180d4a4 100644
--- a/tests/test_sort.rs
+++ b/tests/test_sort.rs
@@ -67,7 +67,7 @@ fn test_multiple_files() {
         .arg("-n")
         .arg("multiple_files1.txt")
         .arg("multiple_files2.txt")
-        .succeeds().stdout_is_fixture("multiple_files.expected");
+        .succeeds().stdout_only_fixture("multiple_files.expected");
 }
 
 #[test]
@@ -77,7 +77,7 @@ fn test_merge_interleaved() {
         .arg("merge_ints_interleaved_1.txt")
         .arg("merge_ints_interleaved_2.txt")
         .arg("merge_ints_interleaved_3.txt")
-        .succeeds().stdout_is_fixture("merge_ints_interleaved.expected");
+        .succeeds().stdout_only_fixture("merge_ints_interleaved.expected");
 }
 
 #[test]
@@ -91,7 +91,7 @@ fn test_merge_unique() {
         .arg("merge_ints_interleaved_3.txt")
         .arg("merge_ints_interleaved_2.txt")
         .arg("merge_ints_interleaved_1.txt")
-        .succeeds().stdout_is_fixture("merge_ints_interleaved.expected");
+        .succeeds().stdout_only_fixture("merge_ints_interleaved.expected");
 }
 
 #[test]
@@ -102,7 +102,7 @@ fn test_merge_reversed() {
         .arg("merge_ints_reversed_1.txt")
         .arg("merge_ints_reversed_2.txt")
         .arg("merge_ints_reversed_3.txt")
-        .succeeds().stdout_is_fixture("merge_ints_reversed.expected");
+        .succeeds().stdout_only_fixture("merge_ints_reversed.expected");
 }
 
 #[test]