3 files changed, 21 insertions, 9 deletions
diff --git a/src/main/java/org/traccar/config/Config.java b/src/main/java/org/traccar/config/Config.java
index 1231918c6..c6d87bfd6 100644
--- a/src/main/java/org/traccar/config/Config.java
+++ b/src/main/java/org/traccar/config/Config.java
@@ -134,16 +134,22 @@ public class Config {
         return hasKey(key) ? Long.parseLong(getString(key)) : defaultValue;
     }
 
-    public double getDouble(ConfigKey key) {
-        return getDouble(key, 0.0);
-    }
-
-    public double getDouble(ConfigKey key, double defaultValue) {
-        return hasKey(key.getKey()) ? Double.parseDouble(getString(key.getKey())) : defaultValue;
+    public double getDouble(ConfigKey<Double> key) {
+        String value = getString(key.getKey());
+        if (value != null) {
+            return Double.parseDouble(value);
+        } else {
+            Double defaultValue = key.getDefaultValue();
+            if (defaultValue != null) {
+                return defaultValue;
+            } else {
+                return 0;
+            }
+        }
     }
 
     @VisibleForTesting
-    public void setString(ConfigKey key, String value) {
+    public void setString(ConfigKey<?> key, String value) {
         properties.put(key.getKey(), value);
     }
 
diff --git a/src/main/java/org/traccar/config/ConfigKey.java b/src/main/java/org/traccar/config/ConfigKey.java
index 926b46851..cc095c087 100644
--- a/src/main/java/org/traccar/config/ConfigKey.java
+++ b/src/main/java/org/traccar/config/ConfigKey.java
@@ -37,4 +37,8 @@ public class ConfigKey<T> {
         return key;
     }
 
+    public T getDefaultValue() {
+        return defaultValue;
+    }
+
 }
diff --git a/src/main/java/org/traccar/config/Keys.java b/src/main/java/org/traccar/config/Keys.java
index b6b78d4d7..dc204b2f5 100644
--- a/src/main/java/org/traccar/config/Keys.java
+++ b/src/main/java/org/traccar/config/Keys.java
@@ -91,7 +91,8 @@ public final class Keys {
      */
     public static final ConfigKey<Double> EVENT_MOTION_SPEED_THRESHOLD = new ConfigKey<>(
             "event.motion.speedThreshold",
-            Collections.singletonList(KeyType.FILE));
+            Collections.singletonList(KeyType.FILE),
+            0.01);
 
     /**
      * Global polyline geofence distance. Within that distance from the polyline, point is considered within the
@@ -99,7 +100,8 @@ public final class Keys {
      */
     public static final ConfigKey<Double> GEOFENCE_POLYLINE_DISTANCE = new ConfigKey<>(
             "geofence.polylineDistance",
-            Collections.singletonList(KeyType.FILE));
+            Collections.singletonList(KeyType.FILE),
+            25.0);
 
     /**
      * Path to the database driver JAR file. Traccar includes drivers for MySQL, PostgreSQL and H2 databases. If you use