diff --git a/CHANGELOG.md b/CHANGELOG.md
index 42272ed5..86db50a9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [PEP 440](https://www.python.org/dev/peps/pep-0440/)
 and uses [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+### Fixed
+* [679](https://github.com/dbekaert/RAiDER/pull/679) - Fixed a bug causing test_updateTrue to falsely pass.
+
 ## [0.5.3]
 ### Fixed
 * Updates dem-stitcher to 2.5.8 to ensure new (ARIA-managed) url for reading the Geoid EGM 2008. See this [issue](https://github.com/ACCESS-Cloud-Based-InSAR/dem-stitcher/issues/96).
diff --git a/test/credentials/test_envVars.py b/test/credentials/test_envVars.py
index 9c8bcd07..1ec3ec28 100644
--- a/test/credentials/test_envVars.py
+++ b/test/credentials/test_envVars.py
@@ -90,19 +90,19 @@ def test_envVars(
     rc_path = rc_path.expanduser()
     rc_path.unlink(missing_ok=True)
 
+    # Give the rc file mock contents
+    rc_path.write_text(template.format(uid=random_string(), key=random_string()))
+
     test_uid = random_string()
     test_key = random_string()
 
     with monkeypatch.context() as mp:
         mp.setenv(env_var_name_uid, test_uid)
         mp.setenv(env_var_name_key, test_key)
-        credentials.check_api(model_name, None, None, './', update_rc_file=False)
+        credentials.check_api(model_name, None, None, './', update_rc_file=True)
 
     expected_content = template.format(uid=test_uid, key=test_key)
     actual_content = rc_path.read_text()
     rc_path.unlink()
 
-    assert (
-        expected_content == actual_content,
-        f'{rc_path} was not updated correctly'
-    )
+    assert expected_content == actual_content, f'{rc_path} was not created correctly'
diff --git a/test/credentials/test_updateTrue.py b/test/credentials/test_updateTrue.py
index 9ed65fbc..5b31dbfc 100644
--- a/test/credentials/test_updateTrue.py
+++ b/test/credentials/test_updateTrue.py
@@ -77,15 +77,16 @@ def test_updateTrue(model_name, template):
         return
     rc_path = Path('./') / (hidden_ext + rc_filename)
 
+    # Give the rc file mock contents
+    rc_path.write_text(template.format(uid=random_string(), key=random_string()))
+
+    # Use check_api to update the rc file
     test_uid = random_string()
     test_key = random_string()
     credentials.check_api(model_name, test_uid, test_key, './', update_rc_file=True)
 
+    # Check that the rc file was properly updated
     expected_content = template.format(uid=test_uid, key=test_key)
     actual_content = rc_path.read_text()
     rc_path.unlink()
-
-    assert (
-        expected_content == actual_content,
-        f'{rc_path} was not updated correctly'
-    )
+    assert expected_content == actual_content, f'{rc_path} was not updated correctly'
diff --git a/tools/RAiDER/models/credentials.py b/tools/RAiDER/models/credentials.py
index 70900bca..e6c238cc 100644
--- a/tools/RAiDER/models/credentials.py
+++ b/tools/RAiDER/models/credentials.py
@@ -151,8 +151,8 @@ def check_api(model: str,
         # one that belongs to this URL.
         import netrc
         rc_path.touch()
-        netrc_credentials = netrc.netrc(rc_path)
-        netrc_credentials.hosts[url] = (uid, None, key)
+        netrc_credentials = netrc.netrc(str(rc_path))
+        netrc_credentials.hosts[url] = (uid, '', key)
         rc_path.write_text(str(netrc_credentials))
     rc_path.chmod(0o000600)