diff --git a/inbox/crispin.py b/inbox/crispin.py
index 2b75020ef..fa7fc9b87 100644
--- a/inbox/crispin.py
+++ b/inbox/crispin.py
@@ -620,7 +620,7 @@ def folder_prefix(self) -> str:
         # Unfortunately, some servers don't support the NAMESPACE command.
         # In this case, assume that there's no folder prefix.
         if self.conn.has_capability("NAMESPACE"):
-            folder_prefix, folder_separator = self.conn.namespace()[0][0]
+            folder_prefix, __ = self.conn.namespace()[0][0]
             return folder_prefix
         else:
             return ""
diff --git a/inbox/util/testutils.py b/inbox/util/testutils.py
index 6bc1022e7..cd8164360 100644
--- a/inbox/util/testutils.py
+++ b/inbox/util/testutils.py
@@ -49,7 +49,7 @@ def create_test_db() -> None:
         )
 
         subprocess.check_call(
-            f"mysql -h {host} -u{user} -p{password} " f'-e "{cmd}"', shell=True
+            f'mysql -h {host} -u{user} -p{password} -e "{cmd}"', shell=True
         )