diff --git a/opm/parser/eclipse/EclipseState/Schedule/GasLiftOpt.hpp b/opm/parser/eclipse/EclipseState/Schedule/GasLiftOpt.hpp
index bd05397a1..a51571f65 100644
--- a/opm/parser/eclipse/EclipseState/Schedule/GasLiftOpt.hpp
+++ b/opm/parser/eclipse/EclipseState/Schedule/GasLiftOpt.hpp
@@ -267,6 +267,7 @@ public:
     bool active() const;
     bool has_well(const std::string& well) const;
     bool has_group(const std::string& group) const;
+    std::size_t num_wells() const;
 
     static GasLiftOpt serializeObject();
     bool operator==(const GasLiftOpt& other) const;
diff --git a/src/opm/parser/eclipse/EclipseState/Schedule/GasLiftOpt.cpp b/src/opm/parser/eclipse/EclipseState/Schedule/GasLiftOpt.cpp
index 4d01e76fa..20d11cf0d 100644
--- a/src/opm/parser/eclipse/EclipseState/Schedule/GasLiftOpt.cpp
+++ b/src/opm/parser/eclipse/EclipseState/Schedule/GasLiftOpt.cpp
@@ -72,6 +72,10 @@ bool GasLiftOpt::has_well(const std::string& wname) const {
     return (iter != this->m_wells.end());
 }
 
+std::size_t GasLiftOpt::num_wells() const {
+    return this->m_wells.size();
+}
+
 bool GasLiftOpt::has_group(const std::string& gname) const {
     const auto iter = this->m_groups.find(gname);
     return (iter != this->m_groups.end());