diff --git a/src/de/schildbach/pte/AbstractHafasClientInterfaceProvider.java b/src/de/schildbach/pte/AbstractHafasClientInterfaceProvider.java
index 2bc88d18..a13f2e9f 100644
--- a/src/de/schildbach/pte/AbstractHafasClientInterfaceProvider.java
+++ b/src/de/schildbach/pte/AbstractHafasClientInterfaceProvider.java
@@ -104,6 +104,10 @@ public abstract class AbstractHafasClientInterfaceProvider extends AbstractHafas
     private byte[] requestMicMacSalt;
 
     private static final String SERVER_PRODUCT = "hci";
+    private static final String SECTION_TYPE_JOURNEY = "JNY";
+    private static final String SECTION_TYPE_WALK = "WALK";
+    private static final String SECTION_TYPE_TRANSFER = "TRSF";
+    private static final String SECTION_TYPE_DEVI = "DEVI";
     @SuppressWarnings("deprecation")
     private static final HashFunction MD5 = Hashing.md5();
     private static final BaseEncoding HEX = BaseEncoding.base16().lowerCase();
@@ -661,7 +665,7 @@ public abstract class AbstractHafasClientInterfaceProvider extends AbstractHafas
                     final Stop arrivalStop = parseJsonStop(secArr, locList, crdSysList, c, baseDate);
 
                     final Trip.Leg leg;
-                    if ("JNY".equals(secType)) {
+                    if (SECTION_TYPE_JOURNEY.equals(secType)) {
                         final JSONObject jny = sec.getJSONObject("jny");
                         final Line line = lines.get(jny.getInt("prodX"));
                         final String dirTxt = jny.optString("dirTxt", null);
@@ -722,11 +726,11 @@ public abstract class AbstractHafasClientInterfaceProvider extends AbstractHafas
 
                         leg = new Trip.Public(line, destination, departureStop, arrivalStop, intermediateStops, path,
                                 message);
-                    } else if ("DEVI".equals(secType)) {
+                    } else if (SECTION_TYPE_DEVI.equals(secType)) {
                         leg = new Trip.Individual(Trip.Individual.Type.TRANSFER, departureStop.location,
                                 departureStop.getDepartureTime(), arrivalStop.location, arrivalStop.getArrivalTime(),
                                 null, 0);
-                    } else if ("WALK".equals(secType) || "TRSF".equals(secType)) {
+                    } else if (SECTION_TYPE_WALK.equals(secType) || SECTION_TYPE_TRANSFER.equals(secType)) {
                         final JSONObject gis = sec.getJSONObject("gis");
                         final int distance = gis.optInt("dist", 0);
                         leg = new Trip.Individual(Trip.Individual.Type.WALK, departureStop.location,