diff --git a/FastSimDataFormats/External/BuildFile.xml b/FastSimDataFormats/External/BuildFile.xml
index 4706223bef020..71f103337ce7a 100644
--- a/FastSimDataFormats/External/BuildFile.xml
+++ b/FastSimDataFormats/External/BuildFile.xml
@@ -1,6 +1,7 @@
 <use name="DataFormats/Common"/>
 <use name="DataFormats/GeometrySurface"/>
 <use name="DataFormats/DetId"/>
+<use name="DataFormats/GeometryVector"/>
 <export>
   <lib name="1"/>
 </export>