diff --git a/doc/r1cs_bin_format.md b/doc/r1cs_bin_format.md
index 0161a02..b598831 100644
--- a/doc/r1cs_bin_format.md
+++ b/doc/r1cs_bin_format.md
@@ -2,7 +2,7 @@
 
 ## Simple Summary
 
-This standard defines a standard format for a binery representation of a r1cs constraint system.
+This standard defines a standard format for a binary representation of a r1cs constraint system.
 
 ## Abstract