diff --git a/README.md b/README.md
index 4966324..0640c3d 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ python-sympy -based scripts for photonics symbolic calculations
 
 Dependencies
 ------------
-- python-sympy 'sudo apt install python-sympy'
+- python-sympy `sudo apt install python-sympy`
 
 Test it
 ----------