diff --git a/bfps/NavierStokes.py b/bfps/NavierStokes.py
index 3f14173194d5a32abb070716edf7658e21aef60b..935769ea41547cd9bea3253048e764d5864dd438 100644
--- a/bfps/NavierStokes.py
+++ b/bfps/NavierStokes.py
@@ -503,7 +503,6 @@ class NavierStokes(bfps.fluid_base.fluid_particle_base):
                 self.particle_loop += 'ps{0}->step();\n'.format(self.particle_species)
         self.particle_loop += (('if (ps{0}->iteration % niter_part == 0)\n' +
                                 '{{\n' +
-                                'DEBUG_MSG("aloha\\n");\n' +
                                 'ps{0}->write(stat_file, false);\n').format(self.particle_species) +
                                output_vel_acc + '}\n')
         self.particle_species += 1
diff --git a/bfps/cpp/rFFTW_particles.cpp b/bfps/cpp/rFFTW_particles.cpp
index 0fa609d1a070cc5c48cb12824212813eac8af265..6d4eb0e97918cff2f6bbeb0a9ca7129179314f4a 100644
--- a/bfps/cpp/rFFTW_particles.cpp
+++ b/bfps/cpp/rFFTW_particles.cpp
@@ -270,7 +270,6 @@ void rFFTW_particles<particle_type, rnumber, interp_neighbours>::step()
                             this->iteration+1 :
                             this->integration_steps);
     this->iteration++;
-    DEBUG_MSG("hallo\n");
 }