diff --git a/ext/fileinfo/libmagic/print.c b/ext/fileinfo/libmagic/print.c
index fd10126b1f5..851045375d2 100644
--- a/ext/fileinfo/libmagic/print.c
+++ b/ext/fileinfo/libmagic/print.c
@@ -30,6 +30,7 @@
  */
 
 #include "php.h"
+#include "main/snprintf.h"
 
 #include "file.h"