diff --git a/sys/libkern/iconv.c b/sys/libkern/iconv.c
index 92b04c2864e..e03d8ca05ea 100644
--- a/sys/libkern/iconv.c
+++ b/sys/libkern/iconv.c
@@ -549,9 +549,7 @@ int
 iconv_lookupcp(char **cpp, const char *s)
 {
 	if (cpp == NULL) {
-		ICDEBUG("warning a NULL list passed\n", ""); /* XXX ISO variadic								macros cannot
-								leave out the
-								variadic args */
+		ICDEBUG("warning a NULL list passed\n", "");
 		return ENOENT;
 	}
 	for (; *cpp; cpp++)
diff --git a/sys/sys/iconv.h b/sys/sys/iconv.h
index 671b24e1479..5e59795b6c7 100644
--- a/sys/sys/iconv.h
+++ b/sys/sys/iconv.h
@@ -240,7 +240,7 @@ int iconv_converter_tolowerstub(int c, void *handle);
 int iconv_converter_handler(module_t mod, int type, void *data);
 
 #ifdef ICONV_DEBUG
-#define ICDEBUG(format, ...) printf("%s: "format, __func__ , __VA_ARGS__)
+#define ICDEBUG(format, ...) printf("%s: "format, __func__ , ## __VA_ARGS__)
 #else
 #define ICDEBUG(format, ...)
 #endif