diff --git a/uisimulator/common/stubs.c b/uisimulator/common/stubs.c
index 84621a562b..b9a418d30f 100644
--- a/uisimulator/common/stubs.c
+++ b/uisimulator/common/stubs.c
@@ -252,3 +252,10 @@ int talk_value(int n, int unit, bool enqueue)
     (void)enqueue;
     return 0;
 }
+
+int talk_number(int n, bool enqueue)
+{
+    (void)n;
+    (void)enqueue;
+    return 0;
+}