diff --git a/PowerEditor/src/WinControls/Preference/preferenceDlg.cpp b/PowerEditor/src/WinControls/Preference/preferenceDlg.cpp
index 93bdfa3ac..3581b16bb 100644
--- a/PowerEditor/src/WinControls/Preference/preferenceDlg.cpp
+++ b/PowerEditor/src/WinControls/Preference/preferenceDlg.cpp
@@ -1828,8 +1828,8 @@ INT_PTR CALLBACK TabSettings::run_dlgProc(UINT Message, WPARAM wParam, LPARAM/*
 			        POINT p;
 			        ::GetCursorPos(&p);
 			        int size = tabSizeDlg.doDialog(p);
-			        if (size == -1) return FALSE;
-			        if (size == 0) return FALSE;
+			        if (size <= 0) return FALSE;
+
 			        //Tab size 0 removal
 
 					::SetDlgItemInt(_hSelf, IDC_TABSIZEVAL_STATIC, size, FALSE);