diff --git a/bfps/cpp/vorticity_equation.cpp b/bfps/cpp/vorticity_equation.cpp
index 300e9a24f8aa06ffcd34c751c6761c316759cea0..737db2c47e89624065f3d29a1657575bac5ea786 100644
--- a/bfps/cpp/vorticity_equation.cpp
+++ b/bfps/cpp/vorticity_equation.cpp
@@ -443,6 +443,7 @@ template <class rnumber,
 void vorticity_equation<rnumber, be>::compute_pressure(field<rnumber, be, ONE> *pressure)
 {
     TIMEZONE("vorticity_equation::compute_pressure");
+    pressure->real_space_representation = false;
     /* assume velocity is already in real space representation */
 
     this->v[1]->real_space_representation = true;