diff --git a/tests/testSPHStep.c b/tests/testSPHStep.c
index dade82f1b4f358f5a80091007868650a0115dbfd..daa86163066f4adf355a6a695f4652893a90d5a4 100644
--- a/tests/testSPHStep.c
+++ b/tests/testSPHStep.c
@@ -61,9 +61,9 @@ struct cell *make_cell(size_t N, float cellSize, int offset[3], int id_offset) {
             offset[2] * cellSize + z * cellSize / N + cellSize / (2 * N);
         part->h = h;
         part->id = x * N * N + y * N + z + id_offset;
-        ++part;
         part->ti_begin = 0;
         part->ti_end = 1;
+        ++part;
       }
     }
   }
@@ -193,7 +193,7 @@ int main() {
   runner_do_ghost(&r, ci);
 
   message("h=%f rho=%f N_ngb=%f", p->h, p->rho, p->density.wcount);
-  message("c=%f", p->force.c);
+  message("soundspeed=%f", p->force.soundspeed);
 
   runner_doself2_force(&r, ci);
   runner_do_kick(&r, ci, 1);
diff --git a/tests/testSingle.c b/tests/testSingle.c
index 6f6a8c8ad6cffbc8594d774c4a230220b8039890..e2ec35bc4382658be7754b9c11fc3a3dbe4bbdc1 100644
--- a/tests/testSingle.c
+++ b/tests/testSingle.c
@@ -81,14 +81,14 @@ int main(int argc, char *argv[]) {
   p2.rho = 1.0f;
   p2.mass = 9.7059e-4;
   p2.h = 0.222871287 / 2;
-  p1.force.c = 0.0040824829f;
+  p1.force.soundspeed = 0.0040824829f;
   p1.force.balsara = 0.0f;
-  p2.force.c = 58.8972740361f;
+  p2.force.soundspeed = 58.8972740361f;
   p2.force.balsara = 0.0f;
   p1.u = 1.e-5 / (hydro_gamma_minus_one * p1.rho);
   p2.u = 1.e-5 / (hydro_gamma_minus_one * p2.rho) + 100.0f / (33 * p2.mass);
-  p1.force.POrho2 = p1.u * hydro_gamma_minus_one / p1.rho;
-  p2.force.POrho2 = p2.u * hydro_gamma_minus_one / p2.rho;
+  p1.force.P_over_rho2 = p1.u * hydro_gamma_minus_one / p1.rho;
+  p2.force.P_over_rho2 = p2.u * hydro_gamma_minus_one / p2.rho;
 
   /* Dump a header. */
   // printParticle_single(&p1, NULL);
diff --git a/tests/tolerance.dat b/tests/tolerance.dat
index f5031c5f47dfa203300ebcc9a47fbac42f854d26..beaecb967bc99edafc19ed66ce14db333933b0d7 100644
--- a/tests/tolerance.dat
+++ b/tests/tolerance.dat
@@ -1,3 +1,3 @@
 #   ID      pos_x      pos_y      pos_z        v_x        v_y        v_z           rho        rho_dh        wcount     wcount_dh         div_v       curl_vx       curl_vy       curl_vz
-    0	    1e-6       1e-6	  1e-6 	       1e-6 	  1e-6	     1e-6	   1e-5	      1e-5	    2e-5       3e-2		 1e-5	     1e-5	   1e-5		 1e-5
+    0	    1e-6       1e-6	  1e-6 	       1e-6 	  1e-6	     1e-6	   1e-5	      1e-5	    4e-5       3e-2		 1e-5	     1e-5	   1e-5		 1e-5
     0	    1e-6       1e-6	  1e-6 	       1e-6 	  1e-6	     1e-6	   1e-5	      1.2e-5	    1e-5       1e-2		 1e-4	     1e-4	   1e-4		 1e-4