diff --git a/packages/zoltan/siMPI/pyMPI/siMPI/CMakeLists.txt b/packages/zoltan/siMPI/pyMPI/siMPI/CMakeLists.txt
index 37d8f0caa4..99535f66fd 100644
--- a/packages/zoltan/siMPI/pyMPI/siMPI/CMakeLists.txt
+++ b/packages/zoltan/siMPI/pyMPI/siMPI/CMakeLists.txt
@@ -466,6 +466,7 @@ SET(SOURCES ${SOURCES}
 
 TRIBITS_ADD_LIBRARY(
   simpi
+  HEADERS_INSTALL_SUBDIR simpi
   HEADERS ${HEADERS}
   SOURCES ${SOURCES}
   )