diff --git a/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
index bdfe46902e..eb20ab831c 100644
--- a/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
@@ -1301,7 +1301,7 @@ void FlexFormattingContext::distribute_any_remaining_free_space()
         CSSPixels initial_offset = 0;
         auto number_of_items = flex_line.items.size();
 
-        if (auto_margins == 0) {
+        if (auto_margins == 0 && number_of_items > 0) {
             switch (flex_container().computed_values().justify_content()) {
             case CSS::JustifyContent::Start:
             case CSS::JustifyContent::FlexStart:
diff --git a/Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp
index 33f7039823..f92765f5f0 100644
--- a/Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp
@@ -785,6 +785,9 @@ void GridFormattingContext::distribute_extra_space_across_spanned_tracks_base_si
             affected_tracks.append(track);
     }
 
+    if (affected_tracks.size() == 0)
+        return;
+
     for (auto& track : affected_tracks)
         track.item_incurred_increase = 0;
 
@@ -870,6 +873,9 @@ void GridFormattingContext::distribute_extra_space_across_spanned_tracks_growth_
     for (auto& track : affected_tracks)
         track.item_incurred_increase = 0;
 
+    if (affected_tracks.size() == 0)
+        return;
+
     // 1. Find the space to distribute:
     CSSPixels spanned_tracks_sizes_sum = 0;
     for (auto& track : spanned_tracks) {