diff --git a/src/preprocess.py b/src/preprocess.py
index e21444f..df87533 100644
--- a/src/preprocess.py
+++ b/src/preprocess.py
@@ -64,7 +64,7 @@ class DbOp(object):
                 with conn.cursor() as cur:
                     cur.execute("""
                         insert into measurement_t (time, application_name, moisture, temperature, conductivity, status, battery) 
-                            values (now(), %(application_name)s, %(moisture)s, %(temperature)s, %(conductivity), %(status)s, %(battery)s)
+                            values (now(), %(application_name)s, %(moisture)s, %(temperature)s, %(conductivity)s, %(status)s, %(battery)s)
                         """,
                         { 
                             'application_name': measurement['application_name'],