diff --git a/radio/src/targets/simu/simpgmspace.cpp b/radio/src/targets/simu/simpgmspace.cpp
index c9ad8b0d3..dcf0c6f01 100644
--- a/radio/src/targets/simu/simpgmspace.cpp
+++ b/radio/src/targets/simu/simpgmspace.cpp
@@ -132,7 +132,7 @@ uint16_t getTmr2MHz()
 // return 2ms resolution to match CoOS settings
 U64 CoGetOSTime(void)
 {
-  return microsTimer() * 500;
+  return microsTimer() / 2000;
 }
 
 void simuInit()