diff --git a/ChangeLog b/ChangeLog
index f3e1cfc4e..90aee9aa2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -9,6 +9,7 @@ Bugfix
 Changes
    * Fix tag lengths and value ranges in the documentation of CCM encryption.
      Contributed by Mathieu Briand.
+   * Fix typo in a comment ctr_drbg.c. Contributed by Paul Sokolovsky.
 
 = mbed TLS 2.7.0 branch released 2018-02-03
 
diff --git a/library/ctr_drbg.c b/library/ctr_drbg.c
index c2310cb57..ff532a013 100644
--- a/library/ctr_drbg.c
+++ b/library/ctr_drbg.c
@@ -19,7 +19,7 @@
  *  This file is part of mbed TLS (https://tls.mbed.org)
  */
 /*
- *  The NIST SP 800-90 DRBGs are described in the following publucation.
+ *  The NIST SP 800-90 DRBGs are described in the following publication.
  *
  *  http://csrc.nist.gov/publications/nistpubs/800-90/SP800-90revised_March2007.pdf
  */