diff --git a/libsrc/common/fputs.c b/libsrc/common/fputs.c
index 26eeb85b3..439c6cf6c 100644
--- a/libsrc/common/fputs.c
+++ b/libsrc/common/fputs.c
@@ -13,7 +13,7 @@
 
 
 
-int fputs (const char* s, FILE* f)
+int __fastcall__ fputs (const char* s, FILE* f)
 {
     /* Check if the file is open or if there is an error condition */
     if ((f->f_flags & _FOPEN) == 0 || (f->f_flags & (_FERROR | _FEOF)) != 0) {