https://bugs.gentoo.org/show_bug.cgi?id=560670
http://www.paraview.org/Bug/view.php?id=15655

diff --git a/Qt/Components/CMakeLists.txt b/Qt/Components/CMakeLists.txt
index c45b4bf..8616a90 100644
--- a/Qt/Components/CMakeLists.txt
+++ b/Qt/Components/CMakeLists.txt
@@ -650,7 +650,7 @@ vtk_module_library(${vtk-module}
 #the pqSGExportStateWizard has subclasses that directly access
 #the UI file, and currently we don't have a clean way to break this hard
 #dependency, so for no we install this ui file.
-if(PARAVIEW_INSTALL_DEVELOPMENT_FILES)
+if(PARAVIEW_INSTALL_DEVELOPMENT_FILES AND PARAVIEW_ENABLE_PYTHON)
   install(FILES "${CMAKE_CURRENT_BINARY_DIR}/ui_pqExportStateWizard.h"
           DESTINATION "${VTK_INSTALL_INCLUDE_DIR}")
 endif()