diff --git a/src/main/java/com/github/robtimus/connect/sdk/java/springboot/autoconfigure/ConnectSdkConnectionAutoConfiguration.java b/src/main/java/com/github/robtimus/connect/sdk/java/springboot/autoconfigure/ConnectSdkConnectionAutoConfiguration.java
index 3ddd5fb..07e0f20 100644
--- a/src/main/java/com/github/robtimus/connect/sdk/java/springboot/autoconfigure/ConnectSdkConnectionAutoConfiguration.java
+++ b/src/main/java/com/github/robtimus/connect/sdk/java/springboot/autoconfigure/ConnectSdkConnectionAutoConfiguration.java
@@ -34,6 +34,7 @@
 import org.springframework.scheduling.annotation.EnableScheduling;
 import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Service;
+import com.ingenico.connect.gateway.sdk.java.CommunicatorConfiguration;
 import com.ingenico.connect.gateway.sdk.java.Connection;
 import com.ingenico.connect.gateway.sdk.java.PooledConnection;
 import com.ingenico.connect.gateway.sdk.java.ProxyConfiguration;
@@ -91,7 +92,7 @@ private Set<String> getHttpsProtocols() {
                 return new LinkedHashSet<>(protocols);
             }
         }
-        return null;
+        return CommunicatorConfiguration.DEFAULT_HTTPS_PROTOCOLS;
     }
 
     @Service