diff --git a/src/references.md b/src/references.md
index 294fe1c8..2625c0c4 100644
--- a/src/references.md
+++ b/src/references.md
@@ -1,6 +1,6 @@
 # References
 
-There are two kinds of reference:
+There are two kinds of references:
 
 * Shared reference: `&`
 * Mutable reference: `&mut`