diff --git a/services/src/main/java/org/keycloak/credential/WebAuthnCredentialModelInput.java b/services/src/main/java/org/keycloak/credential/WebAuthnCredentialModelInput.java
index a40dcf34c7..f154c5d46d 100644
--- a/services/src/main/java/org/keycloak/credential/WebAuthnCredentialModelInput.java
+++ b/services/src/main/java/org/keycloak/credential/WebAuthnCredentialModelInput.java
@@ -26,6 +26,7 @@ import com.webauthn4j.data.attestation.authenticator.AttestedCredentialData;
 import com.webauthn4j.data.attestation.authenticator.COSEKey;
 import com.webauthn4j.data.attestation.statement.AttestationStatement;
 
+import java.util.Collections;
 import java.util.Set;
 import java.util.stream.Collectors;
 
@@ -122,7 +123,7 @@ public class WebAuthnCredentialModelInput implements CredentialInput {
     }
 
     public Set<AuthenticatorTransport> getTransports() {
-        return transports;
+        return transports != null ? transports : Collections.emptySet();
     }
 
     public void setTransports(Set<AuthenticatorTransport> transports) {
@@ -170,8 +171,8 @@ public class WebAuthnCredentialModelInput implements CredentialInput {
               .append(Base64.encodeBytes(authenticationRequest.getCredentialId()))
               .append(",");
         }
-        if (CollectionUtils.isNotEmpty(transports)) {
-            final String transportsString = transports.stream()
+        if (CollectionUtils.isNotEmpty(getTransports())) {
+            final String transportsString = getTransports().stream()
                     .map(AuthenticatorTransport::getValue)
                     .collect(Collectors.joining(","));
 
diff --git a/themes/src/main/resources/theme/base/login/webauthn-register.ftl b/themes/src/main/resources/theme/base/login/webauthn-register.ftl
index 3d76241063..1b339a718e 100644
--- a/themes/src/main/resources/theme/base/login/webauthn-register.ftl
+++ b/themes/src/main/resources/theme/base/login/webauthn-register.ftl
@@ -104,10 +104,13 @@
                         $("#attestationObject").val(base64url.encode(new Uint8Array(attestationObject), {pad: false}));
                         $("#publicKeyCredentialId").val(base64url.encode(new Uint8Array(publicKeyCredentialId), {pad: false}));
 
-
-                        let transports = result.response.getTransports();
-                        if (transports) {
-                            $("#transports").val(getTransportsAsString(transports));
+                        if (typeof result.response.getTransports === "function") {
+                            let transports = result.response.getTransports();
+                            if (transports) {
+                                $("#transports").val(getTransportsAsString(transports));
+                            }
+                        } else {
+                            console.log("Your browser is not able to recognize supported transport media for the authenticator.");
                         }
 
                         let initLabel = "WebAuthn Authenticator (Default Label)";