diff --git a/api/src/main/java/com/alttd/boosterapi/config/BoosterFileStorage.java b/api/src/main/java/com/alttd/boosterapi/config/BoosterFileStorage.java
index 4679ec4..98f53c2 100644
--- a/api/src/main/java/com/alttd/boosterapi/config/BoosterFileStorage.java
+++ b/api/src/main/java/com/alttd/boosterapi/config/BoosterFileStorage.java
@@ -123,14 +123,7 @@ public class BoosterFileStorage {
         parser.nextValue();
         double multiplier = parser.getValueAsDouble();
 
-        jsonToken = parser.nextToken();
-        if (jsonToken != JsonToken.FIELD_NAME || !"running".equals(parser.getCurrentName()))
-            return error("Didn't find running at expected location");
-        parser.nextValue();
-        boolean running = parser.getValueAsBoolean();
-        parser.nextValue();
-
-        return Optional.of(new Booster(boosterUUID, activatorName, boosterType, startingTime, duration, multiplier, running));
+        return Optional.of(new Booster(boosterUUID, activatorName, boosterType, startingTime, duration, multiplier));
     }
 
     private Optional<Booster> error(String error) {
@@ -160,7 +153,6 @@ public class BoosterFileStorage {
         generator.writeNumberField("startingTime", booster.getStartingTime().toEpochMilli());
         generator.writeNumberField("duration", booster.getDuration().toMillis());
         generator.writeNumberField("multiplier", booster.getMultiplier());
-        generator.writeBooleanField("running", booster.getRunning());
 
         generator.writeEndObject();
     }
diff --git a/api/src/main/java/com/alttd/boosterapi/data/Booster.java b/api/src/main/java/com/alttd/boosterapi/data/Booster.java
index 889b336..96dffa4 100644
--- a/api/src/main/java/com/alttd/boosterapi/data/Booster.java
+++ b/api/src/main/java/com/alttd/boosterapi/data/Booster.java
@@ -15,7 +15,6 @@ public class Booster implements Comparable<Booster> {
     private Duration duration;
     private final BoosterType boosterType;
     private final Double multiplier;
-    private Boolean running;
 
     public Booster(UUID boosterUUID, BoosterType boosterType, String reason, Duration duration, double multiplier) {
         this.boosterUUID = boosterUUID;
@@ -23,7 +22,6 @@ public class Booster implements Comparable<Booster> {
         this.activatorName = reason;
         this.duration = duration;
         this.multiplier = multiplier;
-        this.running = false;
         this.startingTime = Instant.now();
     }
 
@@ -32,14 +30,13 @@ public class Booster implements Comparable<Booster> {
     }
 
     public Booster(UUID boosterUUID, String activatorName, BoosterType boosterType, Instant startingTime,
-                   Duration duration, double multiplier, boolean running) {
+                   Duration duration, double multiplier) {
         this.boosterUUID = boosterUUID;
         this.activatorName = activatorName;
         this.boosterType = boosterType;
         this.startingTime = startingTime;
         this.duration = duration;
         this.multiplier = multiplier;
-        this.running = running;
     }
 
     public void updateDuration() {
@@ -76,10 +73,6 @@ public class Booster implements Comparable<Booster> {
         return multiplier;
     }
 
-    public Boolean getRunning() {
-        return running;
-    }
-
     @Override
     public boolean equals(Object o) {
         if (this == o)
@@ -114,7 +107,6 @@ public class Booster implements Comparable<Booster> {
                 ", duration=" + duration +
                 ", boosterType=" + boosterType +
                 ", multiplier=" + multiplier +
-                ", running=" + running +
                 '}';
     }
 }
diff --git a/api/src/main/java/com/alttd/boosterapi/data/BoosterCache.java b/api/src/main/java/com/alttd/boosterapi/data/BoosterCache.java
index b789d9e..f4656ad 100644
--- a/api/src/main/java/com/alttd/boosterapi/data/BoosterCache.java
+++ b/api/src/main/java/com/alttd/boosterapi/data/BoosterCache.java
@@ -41,7 +41,14 @@ public class BoosterCache {
             return;
         }
         LinkedList<Booster> list = boosters.get(boosterType);
+        Booster oldActive = null;
+        if (list.size() > 1) {
+            oldActive = list.get(0);
+        }
         list.sort(Booster::compareTo);
+        if (oldActive != null && !list.get(0).getBoosterUUID().equals(oldActive.getBoosterUUID())) {
+            oldActive.updateDuration();
+        }
     }
 
     public synchronized Optional<Booster> getActiveBooster(BoosterType boosterType) {