1 files changed, 2 insertions, 0 deletions
diff --git a/sprinter-json.c b/sprinter-json.c
index c9b68353..0a077907 100644
--- a/sprinter-json.c
+++ b/sprinter-json.c
@@ -118,6 +118,8 @@ json_string_len (struct sprinter *sp, const char *val, size_t len)
 static void
 json_string (struct sprinter *sp, const char *val)
 {
+    if (val == NULL)
+	val = "";
     json_string_len (sp, val, strlen (val));
 }