--- a/mobile/android/base/java/org/mozilla/gecko/db/DBUtils.java
+++ b/mobile/android/base/java/org/mozilla/gecko/db/DBUtils.java
@@ -108,16 +108,17 @@ public class DBUtils {
             return;
         }
 
         // If we needed to retry, but we succeeded, report that in telemetry.
         // Failures are indicated by a lower frequency of UNLOCKED than LOCKED.
         if (attempt > 1) {
             Telemetry.addToHistogram(HISTOGRAM_DATABASE_UNLOCKED, attempt - 1);
         }
+        db.close();
     }
 
     /**
      * Copies a table <b>between</b> database files.
      *
      * This method assumes that the source table and destination table already exist in the
      * source and destination databases, respectively.
      *