--- a/BookmarksEditDialog.st	Sun Sep 08 16:26:36 2019 +0200
+++ b/BookmarksEditDialog.st	Sun Sep 08 16:27:18 2019 +0200
@@ -403,7 +403,7 @@
     | someBookmarks |
 
     someBookmarks := self selectedBookmarks.
-    someBookmarks size = 1 ifTrue:[
+    someBookmarks size == 1 ifTrue:[
         ^ self indexOfBookmark: someBookmarks first
     ].
     ^ 0
@@ -480,7 +480,8 @@
     | someBookmarks bookmarkToMove index |
 
     someBookmarks := self selectedBookmarks.
-    someBookmarks size = 1 ifFalse:[^ self].
+    someBookmarks size == 1 ifFalse:[^ self].
+
     bookmarkToMove := someBookmarks first.
     index := self indexOfBookmark: bookmarkToMove.
     index = self bookmarkList size ifTrue:[^self].
@@ -568,10 +569,12 @@
     | someBookmarks bookmarkToMove index |
 
     someBookmarks := self selectedBookmarks.
-    someBookmarks size = 1 ifFalse:[^ self].
+    someBookmarks size == 1 ifFalse:[^ self].
+
     bookmarkToMove := someBookmarks first.
     index := self indexOfBookmark: bookmarkToMove.
-    index = 1 ifTrue:[^self].
+    index == 1 ifTrue:[^self].
+
     self bookmarkList remove: bookmarkToMove.
     self bookmarkList add: bookmarkToMove beforeIndex: index - 1.
     self selectBookmark: bookmarkToMove.
@@ -621,9 +624,9 @@
 
     someBookmarks isEmpty ifTrue:[^ self].
 
-    someBookmarks size = 1 ifTrue:[
+    someBookmarks size == 1 ifTrue:[
         selectedBookmarkIndex := self selectedBookmarkIndex.
-        selectedBookmarkIndex = 1 ifFalse:[
+        selectedBookmarkIndex == 1 ifFalse:[
             self upButtonEnabledHolder value: true.
         ].
         selectedBookmarkIndex = self bookmarkList size ifFalse:[