diff --git a/Using-RTLSDR-on-HF-with-an-upconverter.md b/Using-RTLSDR-on-HF-with-an-upconverter.md
index b059ac7..a7fc09f 100644
--- a/Using-RTLSDR-on-HF-with-an-upconverter.md
+++ b/Using-RTLSDR-on-HF-with-an-upconverter.md
@@ -18,7 +18,7 @@ show_center_freq = 14500000 # this is what will be the center of the scale on th
 ```
 
 Another way to configure this is to give the 120 MHz frequency offset the following way:
-```
+```python
 samp_rate = 1024000
 center_freq = 134500000
 show_center_freq = center_freq - 120000000