diff --git a/engine/account.go b/engine/account.go
index b3dcb777b..e529a7966 100644
--- a/engine/account.go
+++ b/engine/account.go
@@ -316,6 +316,10 @@ func (ub *Account) debitCreditBalance(cd *CallDescriptor, count bool, dryRun boo
 						return
 					}
 				}
+				// check for blocker
+				if dryRun && balance.Blocker {
+					return // don't go to next balances
+				}
 			}
 		}
 
@@ -354,6 +358,10 @@ func (ub *Account) debitCreditBalance(cd *CallDescriptor, count bool, dryRun boo
 						return
 					}
 				}
+				// check for blocker
+				if dryRun && balance.Blocker {
+					return // don't go to next balances
+				}
 			}
 		}
 		//log.Printf("END CD: %+v", cd)
diff --git a/engine/balances.go b/engine/balances.go
index d667eaf76..167bc0cca 100644
--- a/engine/balances.go
+++ b/engine/balances.go
@@ -46,6 +46,7 @@ type Balance struct {
 	TimingIDs      utils.StringMap
 	Disabled       bool
 	Factor         ValueFactor
+	Blocker        bool
 	precision      int
 	account        *Account // used to store ub reference for shared balances
 	dirty          bool
@@ -67,7 +68,9 @@ func (b *Balance) Equal(o *Balance) bool {
 		b.RatingSubject == o.RatingSubject &&
 		b.Categories.Equal(o.Categories) &&
 		b.SharedGroups.Equal(o.SharedGroups) &&
-		b.Disabled == o.Disabled
+		b.Disabled == o.Disabled &&
+
+		b.Blocker == o.Blocker
 }
 
 func (b *Balance) MatchFilter(o *Balance, skipIds bool) bool {