diff --git a/cpukit/libmisc/stackchk/check.c b/cpukit/libmisc/stackchk/check.c
index a4f40cea38..4019e5e48f 100644
--- a/cpukit/libmisc/stackchk/check.c
+++ b/cpukit/libmisc/stackchk/check.c
@@ -470,7 +470,7 @@ static bool Stack_check_Visit_thread(
 {
   Stack_check_Visitor *visitor;
   char                 name[ 22 ];
-  uintptr_t sp = _CPU_Context_Get_SP( &the_thread->Registers );
+  uintptr_t sp = (uintptr_t) _CPU_Context_Get_SP( &the_thread->Registers );
 
   visitor = arg;
   _Thread_Get_name( the_thread, name, sizeof( name ) );