diff --git a/reference/function/date-time.md b/reference/function/date-time.md
index d06ebe30..c178efcb 100644
--- a/reference/function/date-time.md
+++ b/reference/function/date-time.md
@@ -452,7 +452,7 @@ two timestamps.
 
 **Return value:**
 
-Return value type is `interval`
+Return value type is `interval`.
 
 **Examples:**