diff --git a/apps/benchmarks/FlowAroundSphereCodeGen/FlowAroundSphereCodeGen.py b/apps/benchmarks/FlowAroundSphereCodeGen/FlowAroundSphereCodeGen.py
index f616ba407e10e644878df134f0f295aa75d8fcf6..42b9f33d24cdbc2e060a313033e0b2458eded091 100644
--- a/apps/benchmarks/FlowAroundSphereCodeGen/FlowAroundSphereCodeGen.py
+++ b/apps/benchmarks/FlowAroundSphereCodeGen/FlowAroundSphereCodeGen.py
@@ -47,7 +47,7 @@ lb_method = collision_rule.method
 
 # getter & setter
 setter_assignments = macroscopic_values_setter(lb_method, velocity=velocity_field.center_vector,
-                                               pdfs=pdfs, density=1,
+                                               pdfs=pdfs, density=1.0,
                                                streaming_pattern=streaming_pattern,
                                                previous_timestep=timesteps[0])