diff --git a/AK/StringBuilder.cpp b/AK/StringBuilder.cpp
index a2c1b6d3b02..513469db422 100644
--- a/AK/StringBuilder.cpp
+++ b/AK/StringBuilder.cpp
@@ -40,6 +40,11 @@ ErrorOr<StringBuilder> StringBuilder::create(size_t initial_capacity)
     return StringBuilder { move(buffer) };
 }
 
+StringBuilder::StringBuilder()
+    : StringBuilder(inline_capacity)
+{
+}
+
 StringBuilder::StringBuilder(size_t initial_capacity)
     : m_buffer(MUST(create_buffer(initial_capacity)))
 {
diff --git a/AK/StringBuilder.h b/AK/StringBuilder.h
index b1d71949d7d..d7146dd4bc8 100644
--- a/AK/StringBuilder.h
+++ b/AK/StringBuilder.h
@@ -23,7 +23,8 @@ public:
 
     static ErrorOr<StringBuilder> create(size_t initial_capacity = inline_capacity);
 
-    explicit StringBuilder(size_t initial_capacity = inline_capacity);
+    StringBuilder();
+    explicit StringBuilder(size_t initial_capacity);
     ~StringBuilder() = default;
 
     ErrorOr<void> try_append(StringView);