diff --git a/agents/plugins/mk_postgres.py b/agents/plugins/mk_postgres.py
index 9d9d002dba5..05cfbaeabf9 100755
--- a/agents/plugins/mk_postgres.py
+++ b/agents/plugins/mk_postgres.py
@@ -141,7 +141,10 @@ def __init__(self, db_user, pg_binary_path, instance, process_match_patterns):
         self.pg_passfile = instance.get("pg_passfile", "")
         self.pg_version = instance.get("pg_version")
         self.my_env = os.environ.copy()
-        self.my_env["PGPASSFILE"] = instance.get("pg_passfile", "")
+        if instance.get("pg_passfile", ""):
+            self.my_env["PGPASSFILE"] = instance.get("pg_passfile", "")
+        self.sep = os.sep
+
         self.psql_binary_name = "psql"
         if pg_binary_path is None:
             self.psql_binary_path = self.get_psql_binary_path()
@@ -737,12 +740,15 @@ def get_bloat(self, databases, numeric_version):
         query = "\\pset footer off \\\\"
 
         cur_rows_only = False
+        output = ""
         for idx, database in enumerate(databases):
             query = "%s \\c %s \\\\ %s" % (query, database, bloat_query)
             if idx == 0:
                 query = "%s \\pset tuples_only on" % query
-
-        return self.run_sql_as_db_user(query, mixed_cmd=True, rows_only=cur_rows_only)
+            output += self.run_sql_as_db_user(query, mixed_cmd=True, rows_only=cur_rows_only)
+            cur_rows_only = True
+            query = "\\pset footer off \\\\"
+        return output
 
 
 class PostgresLinux(PostgresBase):