diff --git a/PowerEditor/src/WinControls/Preference/preferenceDlg.cpp b/PowerEditor/src/WinControls/Preference/preferenceDlg.cpp
index 13b7358c..93bdfa3a 100644
--- a/PowerEditor/src/WinControls/Preference/preferenceDlg.cpp
+++ b/PowerEditor/src/WinControls/Preference/preferenceDlg.cpp
@@ -1829,6 +1829,8 @@ INT_PTR CALLBACK TabSettings::run_dlgProc(UINT Message, WPARAM wParam, LPARAM/*
 			        ::GetCursorPos(&p);
 			        int size = tabSizeDlg.doDialog(p);
 			        if (size == -1) return FALSE;
+			        if (size == 0) return FALSE;
+			        //Tab size 0 removal
 
 					::SetDlgItemInt(_hSelf, IDC_TABSIZEVAL_STATIC, size, FALSE);
 					::SetDlgItemInt(_hSelf, IDC_TABSIZEVAL_DISABLE_STATIC, size, FALSE);