diff --git a/OptionsWindow/OptionModule.vb b/OptionsWindow/OptionModule.vb
index 3328bfd..d53c04d 100644
--- a/OptionsWindow/OptionModule.vb
+++ b/OptionsWindow/OptionModule.vb
@@ -514,7 +514,7 @@ Friend Module OptionModule
       '-----------------------------------------------------------------------------------------------------------------
       ' SIZE JAMB
       Dim ThicknessHead As String = String.Empty
-      DefaultGetPrivateProfileString(S_OVERLAP, S_SIZEJAMB, "0", ThicknessHead)
+      DefaultGetPrivateProfileString(S_SIZEJAMB, K_THICKNESSHEAD, "0", ThicknessHead)
       Utility.ConvertCompoConfig(ThicknessHead, 100)
       m_ThicknessHead = ThicknessHead
       Dim ThicknessJamb As String = String.Empty