diff --git a/qpms/ewald.c b/qpms/ewald.c
index cebf428..943a37a 100644
--- a/qpms/ewald.c
+++ b/qpms/ewald.c
@@ -562,7 +562,7 @@ int ewald3_1_z_sigma_long (
   assert(beta.x == 0 && beta.y == 0);
   assert(particle_shift.x == 0 && particle_shift.y == 0);
   const double beta_z = beta.z;
-  const double particle_shift_z = particle_shift_z;
+  const double particle_shift_z = particle_shift.z;
   const qpms_y_sc_t nelem_sc = c->nelem_sc;
   const qpms_l_t lMax = c->lMax;
   
diff --git a/qpms/latticegens.c b/qpms/latticegens.c
index 36559ec..f369e42 100644
--- a/qpms/latticegens.c
+++ b/qpms/latticegens.c
@@ -621,10 +621,10 @@ typedef struct PGen_LatticeRadialHeap_StateData {
   size_t heap_capacity;
   double *r_heap;
   int *coord_heap;
-  double b[0]; // basis vectors and offset
   double offset_r;
   double minR, maxR;
   bool inc_minR, inc_maxR;
+  double b[0]; // basis vectors and offset
 } PGen_LatticeRadialHeap_StateData;
 
 static inline double nd2norm(const double a[], int d) {