diff --git a/AK/StringBuilder.cpp b/AK/StringBuilder.cpp
index 5678d1de790..53a72f04dec 100644
--- a/AK/StringBuilder.cpp
+++ b/AK/StringBuilder.cpp
@@ -22,7 +22,9 @@ inline void StringBuilder::will_append(size_t size)
     needed_capacity += size;
     VERIFY(!needed_capacity.has_overflow());
     Checked<size_t> expanded_capacity = needed_capacity;
-    expanded_capacity *= 2;
+    // Prefer to completely use the inline buffer first
+    if (needed_capacity > inline_capacity)
+        expanded_capacity *= 2;
     VERIFY(!expanded_capacity.has_overflow());
     m_buffer.grow(expanded_capacity.value());
 }