diff --git a/bundles/org.openhab.core.model.rule.runtime/src/org/openhab/core/model/rule/runtime/internal/DSLRuleProvider.java b/bundles/org.openhab.core.model.rule.runtime/src/org/openhab/core/model/rule/runtime/internal/DSLRuleProvider.java
index 35122a40f7d..5829e63e91f 100644
--- a/bundles/org.openhab.core.model.rule.runtime/src/org/openhab/core/model/rule/runtime/internal/DSLRuleProvider.java
+++ b/bundles/org.openhab.core.model.rule.runtime/src/org/openhab/core/model/rule/runtime/internal/DSLRuleProvider.java
@@ -158,7 +158,8 @@ public void modelChanged(String modelFileName, EventType type) {
                         int index = 1;
                         for (org.openhab.core.model.rule.rules.Rule rule : ruleModel.getRules()) {
                             Rule newRule = toRule(ruleModelName, rule, index);
-                            Rule oldRule = rules.get(ruleModelName);
+                            Rule oldRule = rules.remove(ruleModelName);
+                            rules.put(newRule.getUID(), newRule);
                             xExpressions.put(ruleModelName + "-" + index, rule.getScript());
                             modelRules.add(new ModelRulePair(newRule, oldRule));
                             index++;