diff --git a/server/src/com/cloud/network/lb/LoadBalancingRulesManagerImpl.java b/server/src/com/cloud/network/lb/LoadBalancingRulesManagerImpl.java
index d31734a5370..f05b8f1908e 100755
--- a/server/src/com/cloud/network/lb/LoadBalancingRulesManagerImpl.java
+++ b/server/src/com/cloud/network/lb/LoadBalancingRulesManagerImpl.java
@@ -401,12 +401,14 @@ public class LoadBalancingRulesManagerImpl implements LoadBalancingRulesManager,
         int defPortStart = lb.getDefaultPortStart();
         int srcPortEnd = lb.getSourcePortEnd();
         
-        IPAddressVO ipAddr = _ipAddressDao.findById(lb.getSourceIpAddressId());
+        IPAddressVO ipAddr = _ipAddressDao.findById(ipId);
         Long networkId = ipAddr.getSourceNetworkId();
         // make sure ip address exists
         if (ipAddr == null || !ipAddr.readyToUse()) {
             throw new InvalidParameterValueException("Unable to create load balancer rule, invalid IP address id" + ipId);
-        }
+        } else if (ipAddr.isOneToOneNat()) {
+            throw new InvalidParameterValueException("Unable to create load balancer rule; ip id=" + ipId + " has static nat enabled");
+        }                 
         
         _firewallMgr.validateFirewallRule(caller.getCaller(), ipAddr, srcPortStart, srcPortEnd, lb.getProtocol(), Purpose.LoadBalancing);
 
diff --git a/server/src/com/cloud/network/rules/RulesManagerImpl.java b/server/src/com/cloud/network/rules/RulesManagerImpl.java
index e016ffead70..9c6deb8717d 100755
--- a/server/src/com/cloud/network/rules/RulesManagerImpl.java
+++ b/server/src/com/cloud/network/rules/RulesManagerImpl.java
@@ -352,10 +352,15 @@ public class RulesManagerImpl implements RulesManager, RulesService, Manager {
             throw new InvalidParameterValueException("Can't enable static, ip address id=" + ipId + " is a sourceNat ip address");
         }
 
-        if (!ipAddress.isOneToOneNat()) {
-            List<FirewallRuleVO> rules = _firewallDao.listByIpAndPurposeAndNotRevoked(ipId, Purpose.PortForwarding);
-            if (rules != null && !rules.isEmpty()) {
-                throw new NetworkRuleConflictException("Failed to enable static nat for the ip address id=" + ipId + " as it already has firewall rules assigned");
+        if (!ipAddress.isOneToOneNat()) { // Dont allow to enable static nat if PF/LB rules exist for the IP
+            List<FirewallRuleVO> portForwardingRules = _firewallDao.listByIpAndPurposeAndNotRevoked(ipId, Purpose.PortForwarding);
+            if (portForwardingRules != null && !portForwardingRules.isEmpty()) {
+                throw new NetworkRuleConflictException("Failed to enable static nat for the ip address id=" + ipId + " as it already has PortForwarding rules assigned");
+            }
+            
+            List<FirewallRuleVO> loadBalancingRules = _firewallDao.listByIpAndPurposeAndNotRevoked(ipId, Purpose.LoadBalancing);
+            if (loadBalancingRules != null && !loadBalancingRules.isEmpty()) {
+                throw new NetworkRuleConflictException("Failed to enable static nat for the ip address id=" + ipId + " as it already has LoadBalancing rules assigned");
             }
         } else {
             if (ipAddress.getAssociatedWithVmId() != null && ipAddress.getAssociatedWithVmId().longValue() != vmId) {