diff --git a/map/map-impl/src/main/java/org/restcomm/protocols/ss7/map/primitives/MAPPrivateExtensionImpl.java b/map/map-impl/src/main/java/org/restcomm/protocols/ss7/map/primitives/MAPPrivateExtensionImpl.java
index ffa847eacd..778a918a5b 100644
--- a/map/map-impl/src/main/java/org/restcomm/protocols/ss7/map/primitives/MAPPrivateExtensionImpl.java
+++ b/map/map-impl/src/main/java/org/restcomm/protocols/ss7/map/primitives/MAPPrivateExtensionImpl.java
@@ -206,7 +206,7 @@ public String toString() {
         StringBuilder sb = new StringBuilder();
         sb.append("PrivateExtension [");
 
-        if (this.oId != null || this.oId.length > 0) {
+        if (this.oId != null && this.oId.length > 0) {
             sb.append("Oid=");
             sb.append(this.ArrayToString(this.oId));
         }