diff --git a/acc/mhd_solver/stencil_assembly.sas b/acc/mhd_solver/stencil_assembly.sas
index e2f95f7..06b1063 100644
--- a/acc/mhd_solver/stencil_assembly.sas
+++ b/acc/mhd_solver/stencil_assembly.sas
@@ -1,5 +1,5 @@
 
-#define LUPWD (1)
+#define LUPWD (0)
 
 
 Preprocessed Scalar
diff --git a/acc/mhd_solver/stencil_process.sps b/acc/mhd_solver/stencil_process.sps
index 1692990..40b28ed 100644
--- a/acc/mhd_solver/stencil_process.sps
+++ b/acc/mhd_solver/stencil_process.sps
@@ -2,8 +2,8 @@
 #define LENTROPY (1)
 #define LTEMPERATURE (0)
 #define LGRAVITY (0)
-#define LFORCING (1)
-#define LUPWD (1)
+#define LFORCING (0)
+#define LUPWD (0)
 
 
 // Declare uniforms (i.e. device constants)