diff --git a/extensions/guacamole-auth-radius/src/main/java/org/apache/guacamole/auth/radius/AuthenticationProviderService.java b/extensions/guacamole-auth-radius/src/main/java/org/apache/guacamole/auth/radius/AuthenticationProviderService.java
index bb2e203b7..2b4f98192 100644
--- a/extensions/guacamole-auth-radius/src/main/java/org/apache/guacamole/auth/radius/AuthenticationProviderService.java
+++ b/extensions/guacamole-auth-radius/src/main/java/org/apache/guacamole/auth/radius/AuthenticationProviderService.java
@@ -111,7 +111,7 @@ public class AuthenticationProviderService {
         String challengeResponse = request.getParameter(RadiusChallengeResponseField.PARAMETER_NAME);
 
         // We do not have a challenge response, so we proceed normally
-        if (challengeResponse == null || challengeResponse.isEmpty()) {
+        if (challengeResponse == null) {
 
             // Initialize Radius Packet and try to authenticate
             try {