diff --git a/tests/layout/test_float.py b/tests/layout/test_float.py
index d3b1bc234..62f1aa784 100644
--- a/tests/layout/test_float.py
+++ b/tests/layout/test_float.py
@@ -271,6 +271,27 @@ def test_floats_page_breaks_2():
     assert positions_y == [[10], [10]]
 
 
+@assert_no_logs
+def test_floats_page_breaks_side_by_side():
+    # Don’t move an overflowing float when it’s next to another float.
+    page, = render_pages('''
+      <style>
+        @page { size: 100px; margin: 10px }
+        div { height: 81px; float: left }
+        .left { width: 20% }
+        .right { width: 80% }
+      </style>
+      <div class="left">left</div>
+      <div class="right">right</div>
+    ''')
+
+    divs = [
+        box for box in page.descendants()
+        if box.element_tag == 'div' and box.is_floated()]
+    assert [(div.position_x, div.position_y) for div in divs] == [
+        (10, 10), (26, 10)]
+
+
 @assert_no_logs
 def test_floats_page_breaks_3():
     # Tests floated images shorter than the page
diff --git a/weasyprint/layout/block.py b/weasyprint/layout/block.py
index e259adb9a..345d91829 100644
--- a/weasyprint/layout/block.py
+++ b/weasyprint/layout/block.py
@@ -270,7 +270,8 @@ def _out_of_flow_layout(context, box, index, child, new_children,
         page_overflow = context.overflows_page(
             bottom_space, new_child.position_y + new_child.height)
         add_child = (
-            (page_is_empty and not new_children) or
+            (page_is_empty and (
+                not new_children or new_child.position_y == box.content_box_y())) or
             not page_overflow or
             box.is_monolithic())
         if add_child: