diff --git a/uhabits-android/src/main/AndroidManifest.xml b/uhabits-android/src/main/AndroidManifest.xml
index ac3389550..9e8e8ae48 100644
--- a/uhabits-android/src/main/AndroidManifest.xml
+++ b/uhabits-android/src/main/AndroidManifest.xml
@@ -20,8 +20,8 @@
 <manifest
     package="org.isoron.uhabits"
     xmlns:android="http://schemas.android.com/apk/res/android"
-    android:versionCode="30"
-    android:versionName="1.7.3">
+    android:versionCode="31"
+    android:versionName="1.7.4">
 
     <uses-permission android:name="android.permission.VIBRATE"/>
 
diff --git a/uhabits-android/src/main/java/org/isoron/uhabits/models/sqlite/SQLiteHabitList.java b/uhabits-android/src/main/java/org/isoron/uhabits/models/sqlite/SQLiteHabitList.java
index cfceec388..43eed3ce4 100644
--- a/uhabits-android/src/main/java/org/isoron/uhabits/models/sqlite/SQLiteHabitList.java
+++ b/uhabits-android/src/main/java/org/isoron/uhabits/models/sqlite/SQLiteHabitList.java
@@ -267,9 +267,7 @@ public class SQLiteHabitList extends HabitList
         for (HabitRecord record : recordList)
         {
             Habit habit = getById(record.getId());
-            if (habit == null)
-                throw new RuntimeException("habit not in database");
-
+            if (habit == null) continue;
             if (!filter.matches(habit)) continue;
             habits.add(habit);
         }
diff --git a/uhabits-core/src/main/java/org/isoron/uhabits/core/models/ScoreList.java b/uhabits-core/src/main/java/org/isoron/uhabits/core/models/ScoreList.java
index fc1fc4cd5..0f9c19145 100644
--- a/uhabits-core/src/main/java/org/isoron/uhabits/core/models/ScoreList.java
+++ b/uhabits-core/src/main/java/org/isoron/uhabits/core/models/ScoreList.java
@@ -81,7 +81,7 @@ public abstract class ScoreList implements Iterable<Score>
      * @param timestamp the timestamp of a day
      * @return score value for that day
      */
-    public final double getValue(long timestamp)
+    public final synchronized double getValue(long timestamp)
     {
         compute(timestamp, timestamp);
         Score s = getComputedByTimestamp(timestamp);