diff --git a/src/ca/nciu.cpp b/src/ca/nciu.cpp
index 099f2d380..7644b09e3 100644
--- a/src/ca/nciu.cpp
+++ b/src/ca/nciu.cpp
@@ -408,7 +408,7 @@ int nciu::write ( unsigned type, unsigned long countIn, const void *pValue )
     else {
         status = ECA_DISCONNCHID;
     }
-    this->lockPIIU ();
+    this->unlockPIIU ();
     return status;
 }