diff --git a/share/cmake/CMakeLists.txt b/share/cmake/CMakeLists.txt
index 062ed6c6..bf97bfb8 100644
--- a/share/cmake/CMakeLists.txt
+++ b/share/cmake/CMakeLists.txt
@@ -7,4 +7,4 @@ install(
   DESTINATION lib/cmake/app4triqs
 )
 
-install(EXPORT app4triqs-targets DESTINATION lib/cmake/app4triqs)
+install(EXPORT app4triqs-targets NAMESPACE app4triqs:: DESTINATION lib/cmake/app4triqs)