diff --git a/vm/byte_arrays.hpp b/vm/byte_arrays.hpp
index 68b706be7b..4954f31094 100755
--- a/vm/byte_arrays.hpp
+++ b/vm/byte_arrays.hpp
@@ -7,16 +7,5 @@ PRIMITIVE(byte_array);
 PRIMITIVE(uninitialized_byte_array);
 PRIMITIVE(resize_byte_array);
 
-struct growable_byte_array {
-	cell count;
-	gc_root<byte_array> elements;
-
-	growable_byte_array(factorvm *vm,cell capacity = 40) : count(0), elements(allot_byte_array(capacity),vm) { }
-
-	void append_bytes(void *elts, cell len);
-	void append_byte_array(cell elts);
-
-	void trim();
-};
 
 }
diff --git a/vm/master.hpp b/vm/master.hpp
index 98ed043e05..0eb51e7230 100755
--- a/vm/master.hpp
+++ b/vm/master.hpp
@@ -54,11 +54,11 @@
 #include "generic_arrays.hpp"
 #include "debug.hpp"
 #include "arrays.hpp"
-#include "vm.hpp"
 #include "strings.hpp"
 #include "booleans.hpp"
 #include "byte_arrays.hpp"
 #include "tuples.hpp"
+#include "vm.hpp"
 #include "words.hpp"
 #include "math.hpp"
 #include "float_bits.hpp"
diff --git a/vm/vm.hpp b/vm/vm.hpp
index 0ccb86b970..b185a1600e 100644
--- a/vm/vm.hpp
+++ b/vm/vm.hpp
@@ -929,6 +929,19 @@ struct growable_array {
 	void trim();
 };
 
+//byte_arrays.hpp
+struct growable_byte_array {
+	cell count;
+	gc_root<byte_array> elements;
+
+	growable_byte_array(factorvm *vm,cell capacity = 40) : count(0), elements(allot_byte_array(capacity),vm) { }
+
+	void append_bytes(void *elts, cell len);
+	void append_byte_array(cell elts);
+
+	void trim();
+};
+
 // next method here: