diff --git a/src/mhd/VPotential/mhd_io.h b/src/mhd/VPotential/mhd_io.h
index 381f2f95174b403572fb9de8259d188f2b9a9342..b20cecce24651bf74a442592798799bea355d7bf 100644
--- a/src/mhd/VPotential/mhd_io.h
+++ b/src/mhd/VPotential/mhd_io.h
@@ -364,6 +364,8 @@ INLINE static void calculate_SPH_sum_err(const struct engine* e,
 
   ret[0] = 1-SPH1;
 
+}
+
 /**
  * @brief Specifies which particle fields to write to a dataset
  *