diff --git a/apps/ios/SimpleXChat/hs_init.c b/apps/ios/SimpleXChat/hs_init.c
index 7ec270e554..4d4ff9afa2 100644
--- a/apps/ios/SimpleXChat/hs_init.c
+++ b/apps/ios/SimpleXChat/hs_init.c
@@ -7,6 +7,7 @@
 //
 
 #include "hs_init.h"
+#include <string.h>
 
 extern void hs_init_with_rtsopts(int * argc, char **argv[]);