diff --git a/api_app.py b/api_app.py
index 6ed1429..18054e3 100644
--- a/api_app.py
+++ b/api_app.py
@@ -11,53 +11,7 @@ api_app = Flask(__name__)
 api = Api(api_app)
 
 # TODO this is duplicated from kiss_and_db.py, can I avoid that?
-db_fields = ("id",
-"addresse",
-"alive",
-"altitude",
-"comment",
-"course",
-"created",
-"format",
-"frame",
-"from",
-"gpsfixstatus",
-"latitude",
-"longitude",
-"mbits",
-"messagecapable",
-"message_text",
-"msgNo",
-"mtype",
-"object_format",
-"object_name",
-"path",
-"phg",
-"phg_dir",
-"phg_gain",
-"phg_height",
-"phg_power",
-"phg_range",
-"posambiguity",
-"raw",
-"raw_timestamp",
-"speed",
-"station_call",
-"station_lat",
-"station_lon",
-"status",
-"subpacket",
-"symbol",
-"symbol_table",
-"telemetry",
-"timestamp",
-"to",
-"tEQNS",
-"tPARM",
-"tUNIT",
-"via",
-"weather",
-"wx_raw_timestamp")
+import constants
 
 def read_config():
     config = configparser.ConfigParser()
@@ -121,7 +75,7 @@ def select_frames(conn, n, from_, url_params):
     # Filter out any keys that don't match db fields
     # From https://stackoverflow.com/a/20256491
     dictfilt = lambda x, y: dict([ (i,x[i]) for i in x if i in set(y) ])
-    field_where = dictfilt(url_params, db_fields)
+    field_where = dictfilt(url_params, constants.db_frames_fields)
     # Then loop through fields to create query parts
     # From https://stackoverflow.com/a/73512269/2152245
     field_where_str = ' AND '.join([f'"{k}" LIKE \'{v}\'' for k,v in field_where.items()])
diff --git a/constants.py b/constants.py
new file mode 100644
index 0000000..3bd8420
--- /dev/null
+++ b/constants.py
@@ -0,0 +1,48 @@
+# Tuple of frames table fields
+db_frames_fields = ("id",
+"addresse",
+"alive",
+"altitude",
+"comment",
+"course",
+"created",
+"format",
+"frame",
+"from",
+"gpsfixstatus",
+"latitude",
+"longitude",
+"mbits",
+"messagecapable",
+"message_text",
+"msgNo",
+"mtype",
+"object_format",
+"object_name",
+"path",
+"phg",
+"phg_dir",
+"phg_gain",
+"phg_height",
+"phg_power",
+"phg_range",
+"posambiguity",
+"raw",
+"raw_timestamp",
+"speed",
+"station_call",
+"station_lat",
+"station_lon",
+"status",
+"subpacket",
+"symbol",
+"symbol_table",
+"telemetry",
+"timestamp",
+"to",
+"tEQNS",
+"tPARM",
+"tUNIT",
+"via",
+"weather",
+"wx_raw_timestamp")
diff --git a/kiss_and_db.py b/kiss_and_db.py
index 24e4209..5e23ef9 100644
--- a/kiss_and_db.py
+++ b/kiss_and_db.py
@@ -6,54 +6,6 @@ import json
 import aprslib
 import configparser
 
-db_fields = ("id",
-"addresse",
-"alive",
-"altitude",
-"comment",
-"course",
-"created",
-"format",
-"frame",
-"from",
-"gpsfixstatus",
-"latitude",
-"longitude",
-"mbits",
-"messagecapable",
-"message_text",
-"msgNo",
-"mtype",
-"object_format",
-"object_name",
-"path",
-"phg",
-"phg_dir",
-"phg_gain",
-"phg_height",
-"phg_power",
-"phg_range",
-"posambiguity",
-"raw",
-"raw_timestamp",
-"speed",
-"station_call",
-"station_lat",
-"station_lon",
-"status",
-"subpacket",
-"symbol",
-"symbol_table",
-"telemetry",
-"timestamp",
-"to",
-"tEQNS",
-"tPARM",
-"tUNIT",
-"via",
-"weather",
-"wx_raw_timestamp")
-
 def read_config():
     config = configparser.ConfigParser()
     config.read('config.ini')