diff --git a/app/src/main/java/net/pokeranalytics/android/model/realm/Session.kt b/app/src/main/java/net/pokeranalytics/android/model/realm/Session.kt
index 610cf848..5174d4d2 100644
--- a/app/src/main/java/net/pokeranalytics/android/model/realm/Session.kt
+++ b/app/src/main/java/net/pokeranalytics/android/model/realm/Session.kt
@@ -294,8 +294,10 @@ open class Session : RealmObject(), Savable, RowUpdatable, RowRepresentable, Tim
 	// The number of tables played at the same time
 	var numberOfTables: Int = 1
 		set(value) {
-			field = value
-			this.computeStats()
+			if (value > 0) {
+				field = value
+				this.computeStats()
+			}
 		}
 
 	// The hand histories of the session