diff --git a/src/testdir/test_blob.vim b/src/testdir/test_blob.vim
index 47c09e7..79fdf44 100644
--- a/src/testdir/test_blob.vim
+++ b/src/testdir/test_blob.vim
@@ -324,5 +324,9 @@
 endfunc
 
 func Test_blob_sort()
-  call assert_fails('call sort(["abc", 0z11], "f")', 'E702:')
+  if has('float')
+    call assert_fails('call sort([1.0, 0z11], "f")', 'E975:')
+  else
+    call assert_fails('call sort(["abc", 0z11], "f")', 'E702:')
+  endif
 endfunc