diff --git a/src/common/componentTools.h b/src/common/componentTools.h
index 9d5ad5ad5..f1c79250d 100644
--- a/src/common/componentTools.h
+++ b/src/common/componentTools.h
@@ -21,6 +21,7 @@
 #define KIWIX_COMPONENTTOOLS_H
 
 #ifdef __APPLE__
+  #include <stdint.h>
   typedef uint16_t char16_t;
 #endif