diff --git a/app/src/main/java/eu/faircode/email/Core.java b/app/src/main/java/eu/faircode/email/Core.java
index 9e56457e91..8d80a059bd 100644
--- a/app/src/main/java/eu/faircode/email/Core.java
+++ b/app/src/main/java/eu/faircode/email/Core.java
@@ -231,7 +231,7 @@ class Core {
                         if (op.message != null)
                             crumb.put("message", Long.toString(op.message));
                         crumb.put("similar", TextUtils.join(",", sids));
-                        crumb.put("thread", Thread.currentThread().getName());
+                        crumb.put("thread", Thread.currentThread().getName() + ":" + Thread.currentThread().getId());
                         crumb.put("free", Integer.toString(Log.getFreeMemMb()));
                         Log.breadcrumb("start operation", crumb);
 
@@ -362,7 +362,7 @@ class Core {
                             }
                         }
 
-                        crumb.put("thread", Thread.currentThread().getName());
+                        crumb.put("thread", Thread.currentThread().getName() + ":" + Thread.currentThread().getId());
                         crumb.put("free", Integer.toString(Log.getFreeMemMb()));
                         Log.breadcrumb("end operation", crumb);
 
diff --git a/app/src/main/java/eu/faircode/email/Log.java b/app/src/main/java/eu/faircode/email/Log.java
index de1ebb8447..57412fa9ab 100644
--- a/app/src/main/java/eu/faircode/email/Log.java
+++ b/app/src/main/java/eu/faircode/email/Log.java
@@ -300,7 +300,7 @@ public class Log {
             public boolean run(@NonNull Error error) {
                 error.addToTab("extra", "installer", installer == null ? "-" : installer);
                 error.addToTab("extra", "fingerprint", fingerprint);
-                error.addToTab("extra", "thread", Thread.currentThread().getName());
+                error.addToTab("extra", "thread", Thread.currentThread().getName() + ":" + Thread.currentThread().getId());
                 error.addToTab("extra", "free", Log.getFreeMemMb());
                 error.addToTab("extra", "optimizing", (ignoringOptimizations != null && !ignoringOptimizations));