diff --git a/themes/bootstrap/img/tree-collapse.svg b/themes/bootstrap/img/tree-collapse.svg
index 8243f88c01..706ebf8799 100644
--- a/themes/bootstrap/img/tree-collapse.svg
+++ b/themes/bootstrap/img/tree-collapse.svg
@@ -1 +1 @@
-<svg viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg"><path d="m6 6v18h18v-18zm14 8v2h-10v-2z"/></svg>
\ No newline at end of file
+<svg viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg"><rect x="7" y="7" width="14" height="14"  fill="white"/><path d="m6 6v18h18v-18zm14 8v2h-10v-2z"/></svg>
\ No newline at end of file
diff --git a/themes/bootstrap/img/tree-expand.svg b/themes/bootstrap/img/tree-expand.svg
index 769813f190..762aa0dad9 100644
--- a/themes/bootstrap/img/tree-expand.svg
+++ b/themes/bootstrap/img/tree-expand.svg
@@ -1 +1 @@
-<svg viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg"><path d="m6 6v18h18v-18zm14 8v2h-4v4h-2v-4h-4v-2h4v-4h2v4z"/></svg>
\ No newline at end of file
+<svg viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg"><rect x="6" y="6" width="14" height="14" fill="white"/><path d="m6 6v18h18v-18zm14 8v2h-4v4h-2v-4h-4v-2h4v-4h2v4z"/></svg>
\ No newline at end of file