diff --git a/src/main/java/gov/usgs/earthquake/nshmp/gmm/ChiouYoungs_2008.java b/src/main/java/gov/usgs/earthquake/nshmp/gmm/ChiouYoungs_2008.java
index 2ab0c9c712147c1852c2c14f4ede99eefbc851e4..3a2b7ba0bb860d166860872bd5f96966f0efd41f 100644
--- a/src/main/java/gov/usgs/earthquake/nshmp/gmm/ChiouYoungs_2008.java
+++ b/src/main/java/gov/usgs/earthquake/nshmp/gmm/ChiouYoungs_2008.java
@@ -232,7 +232,7 @@ public class ChiouYoungs_2008 implements GroundMotionModel {
     return sqrt(τ * τ * NL0sq + σNL0 * σNL0);
   }
 
-  static class Usgs extends ChiouYoungs_2014 {
+  static class Usgs extends ChiouYoungs_2008 {
     Usgs(Imt imt) {
       super(imt);
     }