diff --git a/protocols/BQP.md b/protocols/BQP.md
index a8d6ba8095d517da8182f3396bf761f70335ad0b..4b5317d198f64a77b555e5e82139bd8ac2f78b18 100644
--- a/protocols/BQP.md
+++ b/protocols/BQP.md
@@ -28,7 +28,7 @@ Man-in-the-middle attacks against the subsequent exchange of public keys over th
 
 - len(x) denotes the length of x in bytes
 
-- int_n(x) denotes x represented as an unsigned, big-endian, n-bit integer
+- int\_n(x) denotes x represented as an unsigned, big-endian, n-bit integer
 
 ### 1.5 Cryptographic Primitives