diff --git a/libpsx/src/libc.c b/libpsx/src/libc.c
index 6e5c75d..7480825 100644
--- a/libpsx/src/libc.c
+++ b/libpsx/src/libc.c
@@ -177,6 +177,7 @@ static FILE *fopen_internal(const char *path, const char *mode, FILE *f)
 
 	if(fd == -1)
 	{
+		errno = ENOENT;
 		if(s!=NULL)free(s);
 		return NULL;
 	}