diff --git a/ApplicationCode/ProjectDataModel/Completions/RimPerforationInterval.cpp b/ApplicationCode/ProjectDataModel/Completions/RimPerforationInterval.cpp
index c7eefb36d7..75d654ece9 100644
--- a/ApplicationCode/ProjectDataModel/Completions/RimPerforationInterval.cpp
+++ b/ApplicationCode/ProjectDataModel/Completions/RimPerforationInterval.cpp
@@ -38,12 +38,12 @@ RimPerforationInterval::RimPerforationInterval()
 {
     CAF_PDM_InitObject("Perforation", ":/Default.png", "", "");
 
-    CAF_PDM_InitField(&m_startMD, "StartMeasuredDepth", 0.0, "Start MD [m]", "", "", "");
-    CAF_PDM_InitField(&m_endMD, "EndMeasuredDepth", 0.0, "End MD [m]", "", "", "");
-    CAF_PDM_InitField(&m_diameter, "Diameter", 0.0, "Diameter [m]", "", "", "");
-    CAF_PDM_InitField(&m_skinFactor, "SkinFactor", 0.0, "Skin Factor", "", "", "");
-    CAF_PDM_InitField(&m_startOfHistory, "StartOfHistory", true, "Start of History", "", "", "");
-    CAF_PDM_InitFieldNoDefault(&m_date, "StartDate", "Start Date", "", "", "");
+    CAF_PDM_InitField(&m_startMD,        "StartMeasuredDepth", 0.0,   "Start MD [m]", "", "", "");
+    CAF_PDM_InitField(&m_endMD,          "EndMeasuredDepth",   0.0,   "End MD [m]", "", "", "");
+    CAF_PDM_InitField(&m_diameter,       "Diameter",           0.216, "Diameter [m]", "", "", "");
+    CAF_PDM_InitField(&m_skinFactor,     "SkinFactor",         0.0,   "Skin Factor", "", "", "");
+    CAF_PDM_InitField(&m_startOfHistory, "StartOfHistory",     true,  "Start of History", "", "", "");
+    CAF_PDM_InitFieldNoDefault(&m_date,  "StartDate",                 "Start Date", "", "", "");
     m_date.uiCapability()->setUiEditorTypeName(caf::PdmUiLineEditor::uiEditorTypeName());
 
     m_name.uiCapability()->setUiReadOnly(true);