diff --git a/src/hu/openig/screen/items/DiplomacyScreen.java b/src/hu/openig/screen/items/DiplomacyScreen.java
index a9ea75810..e77b16004 100644
--- a/src/hu/openig/screen/items/DiplomacyScreen.java
+++ b/src/hu/openig/screen/items/DiplomacyScreen.java
@@ -1491,7 +1491,9 @@ public void invoke() {
                         acceptOffer.onClick = null;
                         DiplomaticRelation dr = world().getRelation(world().player, other);
                         if (na.callType == CallType.ALLIANCE) {
-                            dr.value = 91;
+                            if (dr.value < 91) {
+                                dr.value = 91;
+                            }
                         } else
                         if (na.callType == CallType.MONEY) {
                             long mny = ((Number)na.value()).longValue();