diff --git a/AK/CircularBuffer.cpp b/AK/CircularBuffer.cpp
index 43b08412685..7d7df199641 100644
--- a/AK/CircularBuffer.cpp
+++ b/AK/CircularBuffer.cpp
@@ -7,6 +7,7 @@
 #include <AK/CircularBuffer.h>
 #include <AK/MemMem.h>
 #include <AK/Stream.h>
+#include <AK/Vector.h>
 
 namespace AK {
 
diff --git a/AK/CircularBuffer.h b/AK/CircularBuffer.h
index 0323b1afcc6..68e0161ae08 100644
--- a/AK/CircularBuffer.h
+++ b/AK/CircularBuffer.h
@@ -8,9 +8,9 @@
 
 #include <AK/ByteBuffer.h>
 #include <AK/Error.h>
+#include <AK/Forward.h>
 #include <AK/HashMap.h>
 #include <AK/Noncopyable.h>
-#include <AK/Vector.h>
 
 namespace AK {