diff --git a/_teaching/2015-spring-teaching-1.md b/_teaching/2015-spring-teaching-1.md
index 191dbb9bd9fb4..c52fbf032f75a 100644
--- a/_teaching/2015-spring-teaching-1.md
+++ b/_teaching/2015-spring-teaching-1.md
@@ -4,7 +4,7 @@ collection: teaching
 type: "Undergraduate Course"
 permalink: /teaching/2015-spring-teaching-1
 venue: "Mechanical Engineering Department, University of Houston"
-date: 2015-2017
+date: 2015-01-01
 location: "Houston, TX"
 ---