diff --git a/ApplicationCode/ProjectDataModel/RimSummaryCalculation.cpp b/ApplicationCode/ProjectDataModel/RimSummaryCalculation.cpp
index fc823f7650..9ec7e9117e 100644
--- a/ApplicationCode/ProjectDataModel/RimSummaryCalculation.cpp
+++ b/ApplicationCode/ProjectDataModel/RimSummaryCalculation.cpp
@@ -428,6 +428,21 @@ QString RimSummaryCalculation::buildCalculationName() const
     return name;
 }
 
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+void RimSummaryCalculation::defineEditorAttribute(const caf::PdmFieldHandle* field, QString uiConfigName, caf::PdmUiEditorAttribute* attribute)
+{
+    if (field == &m_expression)
+    {
+        caf::PdmUiTextEditorAttribute* myAttr = dynamic_cast<caf::PdmUiTextEditorAttribute*>(attribute);
+        if (myAttr)
+        {
+            myAttr->heightHint = -1;
+        }
+    }
+}
+
 //--------------------------------------------------------------------------------------------------
 /// 
 //--------------------------------------------------------------------------------------------------
diff --git a/ApplicationCode/ProjectDataModel/RimSummaryCalculation.h b/ApplicationCode/ProjectDataModel/RimSummaryCalculation.h
index 107fcb660f..8c973ff724 100644
--- a/ApplicationCode/ProjectDataModel/RimSummaryCalculation.h
+++ b/ApplicationCode/ProjectDataModel/RimSummaryCalculation.h
@@ -67,6 +67,8 @@ private:
     virtual void                    fieldChangedByUi(const caf::PdmFieldHandle* changedField, const QVariant& oldValue,
                                                      const QVariant& newValue) override;
 
+    virtual void                    defineEditorAttribute(const caf::PdmFieldHandle* field, QString uiConfigName, 
+                                                          caf::PdmUiEditorAttribute* attribute) override;
     RimSummaryCalculationVariable*  findByName(const QString& name) const;
     RimSummaryCalculationVariable*  addVariable(const QString& name);
     void                            deleteVariable(RimSummaryCalculationVariable* calcVariable);