diff --git a/rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/credentials/CertPemCredentials.java b/rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/credentials/CertPemCredentials.java
index 480c4a0689..2593add406 100644
--- a/rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/credentials/CertPemCredentials.java
+++ b/rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/credentials/CertPemCredentials.java
@@ -60,7 +60,6 @@ import java.security.spec.RSAPrivateCrtKeySpec;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
-import java.util.UUID;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;