diff --git a/opm/simulators/wells/PerfData.cpp b/opm/simulators/wells/PerfData.cpp
index bbf61c9c1..45c9b0b03 100644
--- a/opm/simulators/wells/PerfData.cpp
+++ b/opm/simulators/wells/PerfData.cpp
@@ -49,6 +49,10 @@ std::size_t PerfData::size() const {
     return this->pressure.size();
 }
 
+bool PerfData::empty() const {
+    return this->pressure.empty();
+}
+
 bool PerfData::try_assign(const PerfData& other) {
     if (this->size() != other.size())
         return false;
diff --git a/opm/simulators/wells/PerfData.hpp b/opm/simulators/wells/PerfData.hpp
index 637ab1bb0..70497b3d9 100644
--- a/opm/simulators/wells/PerfData.hpp
+++ b/opm/simulators/wells/PerfData.hpp
@@ -34,6 +34,7 @@ private:
 public:
     PerfData(std::size_t num_perf, bool injector_, std::size_t num_phases);
     std::size_t size() const;
+    bool empty() const;
     bool try_assign(const PerfData& other);