diff --git a/.gitmodules b/.gitmodules
index 5132291b..28b9b149 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,6 @@
 [submodule "extern/vector"]
 	path = extern/vector
-	url = https://github.com/goldsborough/vector.git
+	url = https://github.com/flyfish30/vector.git
 [submodule "extern/libcsptr"]
 	path = extern/libcsptr
 	url = https://github.com/neugates/libcsptr.git
diff --git a/extern/vector b/extern/vector
index 40efe822..9ec1000b 160000
--- a/extern/vector
+++ b/extern/vector
@@ -1 +1 @@
-Subproject commit 40efe822562493396fc02cb13e75f6d52f0fb466
+Subproject commit 9ec1000b6a3d1680cdbd428d40043c5680029b34
diff --git a/include/vector.h b/include/vector.h
index 334ee007..68b58fbf 100644
--- a/include/vector.h
+++ b/include/vector.h
@@ -135,7 +135,9 @@ size_t iterator_index(Vector* vector, Iterator* iterator);
 
 /***** PRIVATE *****/
 
+#ifndef MAX
 #define MAX(a, b) ((a) > (b) ? (a) : (b))
+#endif
 
 bool _vector_should_grow(Vector* vector);
 bool _vector_should_shrink(Vector* vector);