diff --git a/src/main/java/net/frozenorb/apiv3/util/MaxMindUtils.java b/src/main/java/net/frozenorb/apiv3/util/MaxMindUtils.java
index 98db270..55549cc 100644
--- a/src/main/java/net/frozenorb/apiv3/util/MaxMindUtils.java
+++ b/src/main/java/net/frozenorb/apiv3/util/MaxMindUtils.java
@@ -50,15 +50,22 @@ public class MaxMindUtils {
 
 					try {
 						MaxMindResult maxMindResult = new MaxMindResult(bodyJson);
-						future.complete(maxMindResult);
+
+						// we have to check !isComplete() because the circuit breaker's timeout might mark us as failed already
+						if (!future.isComplete()) {
+							future.complete(maxMindResult);
+						}
 					} catch (Exception ignored) {
-						future.complete(null);
+						// we have to check !isComplete() because the circuit breaker's timeout might mark us as failed already
+						if (!future.isComplete()) {
+							future.complete(null);
+						}
 					}
 				});
 
 				response.exceptionHandler((error) -> {
-					// we have to check !failed because the circuit breaker's timeout will mark us as failed already
-					if (future.isComplete()) {
+					// we have to check !isComplete() because the circuit breaker's timeout will might us as failed already
+					if (!future.isComplete()) {
 						future.fail(error);
 					}
 				});