diff --git a/slides/common/declarative.md b/slides/common/declarative.md
index 14dcd1c3..f9062d0a 100644
--- a/slides/common/declarative.md
+++ b/slides/common/declarative.md
@@ -8,7 +8,7 @@
 
 - Imperative:
 
-  *Boil some water. Pour it in a teapot. Add tea leaves. Steep for a while. Serve in cup.*
+  *Boil some water. Pour it in a teapot. Add tea leaves. Steep for a while. Serve in a cup.*
 
 --