diff --git a/modules/libcom/src/osi/os/RTEMS-posix/osdEvent.c b/modules/libcom/src/osi/os/RTEMS-posix/osdEvent.c
index 8c2c81e3e..51ed2bd35 100644
--- a/modules/libcom/src/osi/os/RTEMS-posix/osdEvent.c
+++ b/modules/libcom/src/osi/os/RTEMS-posix/osdEvent.c
@@ -45,6 +45,7 @@ LIBCOM_API void
 epicsEventDestroy(epicsEventId pSem)
 {
     rtems_binary_semaphore_destroy(&pSem->rbs);
+    free(pSem);
 }
 
 LIBCOM_API epicsEventStatus