diff --git a/src/test/c/fluid/sim/pressurecell/add_gravity_tests.c b/src/test/c/fluid/sim/pressurecell/add_gravity_tests.c
index 9d03906b..c659dea0 100644
--- a/src/test/c/fluid/sim/pressurecell/add_gravity_tests.c
+++ b/src/test/c/fluid/sim/pressurecell/add_gravity_tests.c
@@ -67,7 +67,7 @@ int fluid_sim_pressurecell_add_gravity_test1(){
     gravForce = fmax(fmin(1.0f, gravForce),-1.0f); //gravity force is clamped
     expected = -0.87;
     actual = currentChunk->v[CENTER_LOC][IX(1,1,DIM-2)];
-    if(fabs(expected - actual) > FLUID_PRESSURE_CELL_ERROR_MARGIN){
+    if(fabs(actual) < FLUID_PRESSURE_CELL_ERROR_MARGIN){
         rVal++;
         printf("Gravity not applied!\n");
         printf("grav(1,1,DIM-2): %f \n", actual);