diff --git a/examples/datetime/datetime.go b/examples/datetime/datetime.go
index 02bcb7aa..35071735 100644
--- a/examples/datetime/datetime.go
+++ b/examples/datetime/datetime.go
@@ -32,7 +32,7 @@ func main() {
 		log.Fatal(err)
 	}
 	ep, err := opcua.SelectEndpoint(endpoints, *policy, ua.MessageSecurityModeFromString(*mode))
-	if err == nil {
+	if err != nil {
 		log.Fatal(err)
 	}
 
diff --git a/examples/monitor/monitor.go b/examples/monitor/monitor.go
index f9c06df4..e4311ae3 100644
--- a/examples/monitor/monitor.go
+++ b/examples/monitor/monitor.go
@@ -48,7 +48,7 @@ func main() {
 	}
 
 	ep, err := opcua.SelectEndpoint(endpoints, *policy, ua.MessageSecurityModeFromString(*mode))
-	if err == nil {
+	if err != nil {
 		log.Fatal(err)
 	}
 
diff --git a/examples/subscribe/subscribe.go b/examples/subscribe/subscribe.go
index 596f4b89..cff306f8 100644
--- a/examples/subscribe/subscribe.go
+++ b/examples/subscribe/subscribe.go
@@ -44,7 +44,7 @@ func main() {
 		log.Fatal(err)
 	}
 	ep, err := opcua.SelectEndpoint(endpoints, *policy, ua.MessageSecurityModeFromString(*mode))
-	if err == nil {
+	if err != nil {
 		log.Fatal(err)
 	}
 	ep.EndpointURL = *endpoint
diff --git a/examples/trigger/trigger.go b/examples/trigger/trigger.go
index 566bb5cf..da4729ad 100644
--- a/examples/trigger/trigger.go
+++ b/examples/trigger/trigger.go
@@ -44,7 +44,7 @@ func main() {
 		log.Fatal(err)
 	}
 	ep, err := opcua.SelectEndpoint(endpoints, *policy, ua.MessageSecurityModeFromString(*mode))
-	if err == nil {
+	if err != nil {
 		log.Fatal(err)
 	}
 
diff --git a/examples/udt/udt.go b/examples/udt/udt.go
index e5ed1987..20d6a7d3 100644
--- a/examples/udt/udt.go
+++ b/examples/udt/udt.go
@@ -40,7 +40,7 @@ func main() {
 		log.Fatal(err)
 	}
 	ep, err := opcua.SelectEndpoint(endpoints, *policy, ua.MessageSecurityModeFromString(*mode))
-	if err == nil {
+	if err != nil {
 		log.Fatal(err)
 	}