diff --git a/README.md b/README.md
index 78b6b18..d643765 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ https://cad.onshape.com/documents/8ec970df0f91cd7f4dafb0b8/w/81f5e80ab2d84901aa8
 
 ![alt text](https://raw.githubusercontent.com/dvarrel/XCTRACK_vario/master/img_xctrack512.jpg)
 
-** with usb support
+## with usb support
 
 ![alt text](https://raw.githubusercontent.com/dvarrel/XCTRACK_vario/master/vario_MS5611.png)
 
@@ -29,7 +29,7 @@ https://cad.onshape.com/documents/8ec970df0f91cd7f4dafb0b8/w/81f5e80ab2d84901aa8
 
 ![alt text](https://raw.githubusercontent.com/dvarrel/XCTRACK_vario/master/img_usb-c_soldered.jpg)
 
-** with bluetooth support
+## with bluetooth support
 
 ![alt text](https://raw.githubusercontent.com/dvarrel/XCTRACK_vario/master/vario_MS5611_bluetooth.png)