diff --git a/include/nm-macros-internal.h b/include/nm-macros-internal.h
index 291dc0742..7ae08bf72 100644
--- a/include/nm-macros-internal.h
+++ b/include/nm-macros-internal.h
@@ -175,6 +175,7 @@
 	(cond) ? (prefix) : "", \
 	(cond) ? (str) : (str_else), \
 	(cond) ? (suffix) : ""
+#define NM_PRINT_FMT_QUOTE_STRING(arg) NM_PRINT_FMT_QUOTED((arg), "\"", (arg), "\"", "(null)")
 
 /*****************************************************************************/