diff --git a/iconv/iconv.h b/iconv/iconv.h
index aa936a350f..544425d4dc 100644
--- a/iconv/iconv.h
+++ b/iconv/iconv.h
@@ -29,12 +29,19 @@ __BEGIN_DECLS
 typedef void *iconv_t;
 
 
+/* Free resources allocated for descriptor CD for code conversion.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern int iconv_close (iconv_t __cd);
+
 /* Allocate descriptor for code conversion from codeset FROMCODE to
    codeset TOCODE.
 
    This function is a possible cancellation point and therefore not
    marked with __THROW.  */
-extern iconv_t iconv_open (const char *__tocode, const char *__fromcode);
+extern iconv_t iconv_open (const char *__tocode, const char *__fromcode)
+	__attribute_malloc__ __attr_dealloc (iconv_close, 1);
 
 /* Convert at most *INBYTESLEFT bytes from *INBUF according to the
    code conversion algorithm specified by CD and place up to
@@ -44,12 +51,6 @@ extern size_t iconv (iconv_t __cd, char **__restrict __inbuf,
 		     char **__restrict __outbuf,
 		     size_t *__restrict __outbytesleft);
 
-/* Free resources allocated for descriptor CD for code conversion.
-
-   This function is a possible cancellation point and therefore not
-   marked with __THROW.  */
-extern int iconv_close (iconv_t __cd);
-
 __END_DECLS
 
 #endif /* iconv.h */