diff --git a/acc/mhd_solver/stencil_process.sps b/acc/mhd_solver/stencil_process.sps
index 40b28ed..a52f6ac 100644
--- a/acc/mhd_solver/stencil_process.sps
+++ b/acc/mhd_solver/stencil_process.sps
@@ -2,7 +2,7 @@
 #define LENTROPY (1)
 #define LTEMPERATURE (0)
 #define LGRAVITY (0)
-#define LFORCING (0)
+#define LFORCING (1)
 #define LUPWD (0)