diff --git a/tests/io/open_append.py b/tests/io/open_append.py
index <HASH>..<HASH> 100644
--- a/tests/io/open_append.py
+++ b/tests/io/open_append.py
@@ -3,13 +3,13 @@ try:
 except ImportError:
     import os
 
-if not hasattr(os, "unlink"):
+if not hasattr(os, "remove"):
     print("SKIP")
     raise SystemExit
 
 # cleanup in case testfile exists
 try:
-    os.unlink("testfile")
+    os.remove("testfile")
 except OSError:
     pass
 
@@ -32,6 +32,6 @@ f.close()
 
 # cleanup
 try:
-    os.unlink("testfile")
+    os.remove("testfile")
 except OSError:
     pass
diff --git a/tests/io/open_plus.py b/tests/io/open_plus.py
index <HASH>..<HASH> 100644
--- a/tests/io/open_plus.py
+++ b/tests/io/open_plus.py
@@ -3,13 +3,13 @@ try:
 except ImportError:
     import os
 
-if not hasattr(os, "unlink"):
+if not hasattr(os, "remove"):
     print("SKIP")
     raise SystemExit
 
 # cleanup in case testfile exists
 try:
-    os.unlink("testfile")
+    os.remove("testfile")
 except OSError:
     pass
 
@@ -42,6 +42,6 @@ f.close()
 
 # cleanup
 try:
-    os.unlink("testfile")
+    os.remove("testfile")
 except OSError:
     pass
tests/io: Update tests to use uos.remove() instead of uos.unlink().

After Unix port switches from one to another, to be consistent with
baremetal ports.