diff --git a/leshan-server-redis/src/main/java/org/eclipse/leshan/server/redis/RedisSecurityStore.java b/leshan-server-redis/src/main/java/org/eclipse/leshan/server/redis/RedisSecurityStore.java
index 3d90686723..9e96540091 100644
--- a/leshan-server-redis/src/main/java/org/eclipse/leshan/server/redis/RedisSecurityStore.java
+++ b/leshan-server-redis/src/main/java/org/eclipse/leshan/server/redis/RedisSecurityStore.java
@@ -49,7 +49,13 @@ public class RedisSecurityStore implements EditableSecurityStore {
 
     private final List<SecurityStoreListener> listeners = new CopyOnWriteArrayList<>();
 
-    private RedisSecurityStore(Builder builder) {
+    public RedisSecurityStore(Pool<Jedis> pool) {
+        this.pool = pool;
+        this.securityInfoByEndpointPrefix = "SECSTORE#SEC#EP#";
+        this.endpointByPskIdKey = "SECSTORE#EP#PSKID";
+    }
+
+    protected RedisSecurityStore(Builder builder) {
         this.pool = builder.pool;
         this.securityInfoByEndpointPrefix = builder.securityInfoByEndpointPrefix;
         this.endpointByPskIdKey = builder.endpointByPskIdKey;
@@ -196,7 +202,7 @@ public void setPool(Pool<Jedis> pool) {
         /**
          * Set the key prefix for security info lookup by endpoint.
          * <p>
-         * Default value is {@literal SEC#EP#}.
+         * Default value is {@literal SEC#EP#}. Should not be {@code null} or empty.
          */
         public void setSecurityInfoByEndpointPrefix(String securityInfoByEndpointPrefix) {
             this.securityInfoByEndpointPrefix = securityInfoByEndpointPrefix;
@@ -205,7 +211,7 @@ public void setSecurityInfoByEndpointPrefix(String securityInfoByEndpointPrefix)
         /**
          * Set the key for endpoint lookup by PSK identity.
          * <p>
-         * Default value is {@literal EP#PSKID}.
+         * Default value is {@literal EP#PSKID}. Should not be {@code null} or empty.
          */
         public void setEndpointByPskIdKey(String endpointByPskIdKey) {
             this.endpointByPskIdKey = endpointByPskIdKey;
@@ -215,7 +221,7 @@ public void setEndpointByPskIdKey(String endpointByPskIdKey) {
          * Set the prefix for all keys and prefixes including {@link #securityInfoByEndpointPrefix} and
          * {@link #endpointByPskIdKey}.
          * <p>
-         * Default value is {@literal SECSTORE#}.
+         * Default value is {@literal SECSTORE#}. Should not be {@code null}, can be empty.
          */
         public void setPrefix(String prefix) {
             this.prefix = prefix;
@@ -231,11 +237,27 @@ public Builder(Pool<Jedis> pool) {
         /**
          * Create the {@link RedisSecurityStore}.
          * <p>
-         * @return the Redis security store.
+         * Throws {@link IllegalArgumentException} when {@link #securityInfoByEndpointPrefix} or
+         * {@link #endpointByPskIdKey} are not set or are equal to each other.
          */
-        public RedisSecurityStore build() {
-            this.securityInfoByEndpointPrefix = this.prefix + this.securityInfoByEndpointPrefix;
-            this.endpointByPskIdKey = this.prefix + this.endpointByPskIdKey;
+        public RedisSecurityStore build() throws IllegalArgumentException {
+            if (this.securityInfoByEndpointPrefix == null || this.securityInfoByEndpointPrefix.isEmpty()) {
+                throw new IllegalArgumentException("securityInfoByEndpointPrefix should not be empty");
+            }
+
+            if (this.endpointByPskIdKey == null || this.endpointByPskIdKey.isEmpty()) {
+                throw new IllegalArgumentException("endpointByPskIdKey should not be empty");
+            }
+
+            if (this.securityInfoByEndpointPrefix.equals(this.endpointByPskIdKey)) {
+                throw new IllegalArgumentException(
+                        "securityInfoByEndpointPrefix should not be equal to endpointByPskIdKey");
+            }
+
+            if (this.prefix != null) {
+                this.securityInfoByEndpointPrefix = this.prefix + this.securityInfoByEndpointPrefix;
+                this.endpointByPskIdKey = this.prefix + this.endpointByPskIdKey;
+            }
 
             return new RedisSecurityStore(this);
         }