diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9b9a86bd..b2fbc037 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## 1.27.11
 
 * Always include tile and layer in tippecanoe-decode, fixing corrupt JSON.
+* Clean up writing of JSON in general.
 
 ## 1.27.10
 
diff --git a/write_json.cpp b/write_json.cpp
index 90a5184d..8bb2684a 100644
--- a/write_json.cpp
+++ b/write_json.cpp
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <vector>
 #include <map>
 #include <string>