diff --git a/docs/notes/bugfix-11866.md b/docs/notes/bugfix-11866.md
new file mode 100644
index 00000000000..c6c2135adf1
--- /dev/null
+++ b/docs/notes/bugfix-11866.md
@@ -0,0 +1 @@
+#    iphoneHeadingCalibrationTimeout returns empty
diff --git a/engine/src/mblsensor.cpp b/engine/src/mblsensor.cpp
index 72493ba6529..6afd78a879a 100644
--- a/engine/src/mblsensor.cpp
+++ b/engine/src/mblsensor.cpp
@@ -836,7 +836,7 @@ Exec_stat MCHandleHeadingCalibrationTimeout(void *p_context, MCParameter *p_para
     MCSensorGetLocationCalibration(t_ctxt, t_timeout);
     MCresult->setnvalue(t_timeout);
     
-    t_ctxt . SetTheResultToEmpty();
+    // PM-2015-07-08: [[ Bug 11866 ]] Don't empty the result before return
     return t_ctxt.GetStat();
 #endif /* MCHandleHeadingCalibrationTimeout */
 }