diff --git a/Development-Testing.md b/Development-Testing.md
index 02dedbb..119c6d3 100644
--- a/Development-Testing.md
+++ b/Development-Testing.md
@@ -10,7 +10,7 @@
 
 * Fedora / Enterprise Linux
 
-```
+```bash
 dnf install python3-pytest python-tox python-typeguard python-flake8
 ```
 (TODO: other OS/distributions)
@@ -21,14 +21,15 @@ Run in main source directory
 
 ### Syntax check
 
-```
+```bash
 flake8
 ```
 
 ### Complete test suite
 
 Note: in case of strange errors add option `-r` for recreation of environment
-```
+
+```bash
 tox
 ```