diff --git a/gnu/packages/c.scm b/gnu/packages/c.scm
index cfe707d5ad..c1a028b653 100644
--- a/gnu/packages/c.scm
+++ b/gnu/packages/c.scm
@@ -639,7 +639,7 @@ (define-public aws-checksums
 (define-public aws-c-event-stream
   (package
     (name "aws-c-event-stream")
-    ; Update only when updating aws-crt-cpp.
+    ;; Update only when updating aws-crt-cpp.
     (version "0.2.7")
     (source (origin
               (method git-fetch)