diff --git a/src/os/inc/osapi-select.h b/src/os/inc/osapi-select.h
index ac3b0c296..ee4e127cd 100644
--- a/src/os/inc/osapi-select.h
+++ b/src/os/inc/osapi-select.h
@@ -161,7 +161,7 @@ int32 OS_SelectFdClear(OS_FdSet *Set, osal_id_t objid);
  * @retval true  FdSet structure contains ID
  * @retval false FDSet structure does not contain ID
  */
-bool OS_SelectFdIsSet(OS_FdSet *Set, osal_id_t objid);
+bool OS_SelectFdIsSet(const OS_FdSet *Set, osal_id_t objid);
 /**@}*/
 
 #endif /* OSAPI_SELECT_H */
diff --git a/src/os/shared/src/osapi-select.c b/src/os/shared/src/osapi-select.c
index 5d346eb66..e03b7050f 100644
--- a/src/os/shared/src/osapi-select.c
+++ b/src/os/shared/src/osapi-select.c
@@ -190,7 +190,7 @@ int32 OS_SelectFdClear(OS_FdSet *Set, osal_id_t objid)
  *           See description in API and header file for detail
  *
  *-----------------------------------------------------------------*/
-bool OS_SelectFdIsSet(OS_FdSet *Set, osal_id_t objid)
+bool OS_SelectFdIsSet(const OS_FdSet *Set, osal_id_t objid)
 {
     int32        return_code;
     osal_index_t local_id;
diff --git a/src/ut-stubs/osapi-select-stubs.c b/src/ut-stubs/osapi-select-stubs.c
index 9b9375965..7c6ab31af 100644
--- a/src/ut-stubs/osapi-select-stubs.c
+++ b/src/ut-stubs/osapi-select-stubs.c
@@ -66,11 +66,11 @@ int32 OS_SelectFdClear(OS_FdSet *Set, osal_id_t objid)
  * Generated stub function for OS_SelectFdIsSet()
  * ----------------------------------------------------
  */
-bool OS_SelectFdIsSet(OS_FdSet *Set, osal_id_t objid)
+bool OS_SelectFdIsSet(const OS_FdSet *Set, osal_id_t objid)
 {
     UT_GenStub_SetupReturnBuffer(OS_SelectFdIsSet, bool);
 
-    UT_GenStub_AddParam(OS_SelectFdIsSet, OS_FdSet *, Set);
+    UT_GenStub_AddParam(OS_SelectFdIsSet, const OS_FdSet *, Set);
     UT_GenStub_AddParam(OS_SelectFdIsSet, osal_id_t, objid);
 
     UT_GenStub_Execute(OS_SelectFdIsSet, Basic, NULL);