diff --git a/inputs/precipitator_mhd_lowres.in b/inputs/precipitator_mhd_lowres.in
index 023d3a8c..250eeeac 100644
--- a/inputs/precipitator_mhd_lowres.in
+++ b/inputs/precipitator_mhd_lowres.in
@@ -11,7 +11,7 @@ dt         = 50.0      # time increment between outputs
 <parthenon/output2>
 file_type  = hdf5      # HDF5 data dump
 variables  = prim, drho_over_rho, dP_over_P, dK_over_K, dT_over_T, entropy, temperature, tcool_over_tff, dv_x, dv_y, dv_z
-dt         = 500.0     # Time increment between outputs
+dt         = 50.0     # Time increment between outputs
 id         = prim      # Name to append to output
 
 <parthenon/output3>
diff --git a/src/pgen/precipitator.cpp b/src/pgen/precipitator.cpp
index 1bbc20d2..6deab6ed 100644
--- a/src/pgen/precipitator.cpp
+++ b/src/pgen/precipitator.cpp
@@ -1078,7 +1078,7 @@ void ProblemGenerator(MeshBlock *pmb, parthenon::ParameterInput *pin) {
         u_dev(IM2, k, j, i) = 0.0;
         u_dev(IM3, k, j, i) = 0.0;
         u_dev(IEN, k, j, i) = P / gm1;
-        u_dev(IB1, k, j, k) = Bx;
+        u_dev(IB1, k, j, i) = Bx;
         u_dev(IB2, k, j, i) = By;
         u_dev(IB3, k, j, i) = Bz;
       });