diff --git a/PROMS/Volian.Controls.Library/StepTabRibbon.cs b/PROMS/Volian.Controls.Library/StepTabRibbon.cs
index ad26bdbb..97bbbf45 100644
--- a/PROMS/Volian.Controls.Library/StepTabRibbon.cs
+++ b/PROMS/Volian.Controls.Library/StepTabRibbon.cs
@@ -1476,6 +1476,8 @@ namespace Volian.Controls.Library
 			// B2016-237 added context menu item to change image size
 			btnCMImgSz.Enabled = MyEditItem.MyItemInfo.IsFigure && (MyEditItem.MyItemInfo.MyContent.MyImage != null || MyEditItem.MyItemInfo.MyContent.Text.ToUpper().Contains("#LINK"));
 			if (MyItemInfo.IsSupInfoPart) btnInsAfter.Enabled = btnInsAftH.Enabled = btnInsBefore.Enabled = btnInsBefH.Enabled = false;
+			// C2018-005: disable the change step type button when on procedure or section:
+			if (MyItemInfo.IsProcedure || MyItemInfo.IsSection) btnCMChgStep.Enabled = btnChgTyp.Enabled = false;
 		}
 		public void SetButtonAndMenuEnabling(bool docontextmenus)
 		{