diff --git a/Cryptography/RSA.md b/Cryptography/RSA.md
index 5a33742..f9dae63 100644
--- a/Cryptography/RSA.md
+++ b/Cryptography/RSA.md
@@ -9,12 +9,12 @@ $$
 
 * There is also 
 $$
-$\phi$ = (p-1) * (q-1)
+\phi = (p-1) * (q-1)
 $$$
 
 * Encryption, public key `e` is a prime between 2 and phi  
 $$
-2 < e < $\phi$
+2 < e < \phi
 $$
 
 ```python
@@ -26,7 +26,7 @@ for i in range (2, phi):
 
 * Decryption, private key `d` 
 $$
-d * e mod $\phi$ = 1
+d * e mod \phi = 1
 $$
 
 ```python