diff --git a/lib/gpu/lal_pppm.cpp b/lib/gpu/lal_pppm.cpp
index 39249ea350..f957b36a7d 100644
--- a/lib/gpu/lal_pppm.cpp
+++ b/lib/gpu/lal_pppm.cpp
@@ -79,6 +79,8 @@ grdtyp *PPPMT::init(const int nlocal, const int nall, FILE *_screen,
     return nullptr;
   }
 
+  if (ucl_device!=device->gpu) _compiled=false;
+
   ucl_device=device->gpu;
   atom=&device->atom;