diff --git a/sys/boot/ficl/words.c b/sys/boot/ficl/words.c
index 5537b13a5a96..0e8f2c4c2fcd 100644
--- a/sys/boot/ficl/words.c
+++ b/sys/boot/ficl/words.c
@@ -4822,7 +4822,7 @@ WORDKIND ficlWordClassify(FICL_WORD *pFW)
 **************************************************************************/
 static void ficlRandom(FICL_VM *pVM)
 {
-    PUSHINT(random());
+    PUSHUNS(random());
 }