diff --git a/ext/common.go b/ext/common.go
index 1fc00ec..4ff6252 100644
--- a/ext/common.go
+++ b/ext/common.go
@@ -7,10 +7,18 @@ import (
 
 func logError(l *slog.Logger, text string, err error) {
 	if l == nil {
-		log.Printf("ERROR: %s: %s", text, err)
+		log.Printf("ERROR: %s: %s", text, err.Error())
 		return
 	}
-	l.Error(text, "error", err)
+	l.Error(text, "error", err.Error())
+}
+
+func logDebug(l *slog.Logger, text string, args ...any) {
+	if l == nil {
+		// No logger? No debug.
+		return
+	}
+	l.Error(text, args...)
 }
 
 // ternary operator approximation.
diff --git a/ext/dispatcher.go b/ext/dispatcher.go
index de2527c..25202fa 100644
--- a/ext/dispatcher.go
+++ b/ext/dispatcher.go
@@ -285,8 +285,12 @@ func (d *Dispatcher) iterateOverHandlerGroups(b *gotgbot.Bot, ctx *Context) erro
 				continue
 			}
 
+			logDebug(d.Logger, "Matched handler on update", "handler", handler.Name())
+
 			err := handler.HandleUpdate(b, ctx)
 			if err != nil {
+				logDebug(d.Logger, "Update handling returned error", "handler", handler.Name(), "error", err.Error())
+
 				if errors.Is(err, ContinueGroups) {
 					// Continue handling current group.
 					continue