diff --git a/src/Python/pytnl/CMakeLists.txt b/src/Python/pytnl/CMakeLists.txt
index 555f8fc5e233653eab12064bfd88c8e791a6eb08..eecb2aeeb6c9abd9acce6650189df3c4129834ee 100644
--- a/src/Python/pytnl/CMakeLists.txt
+++ b/src/Python/pytnl/CMakeLists.txt
@@ -10,4 +10,4 @@ set( headers
          typedefs.h
 )
 
-install( FILES ${headers} DESTINATION "pytnl" )
+install( FILES ${headers} DESTINATION "include/pytnl" )