diff --git a/fuzzing/fuzz_uri_parse.c b/fuzzing/fuzz_uri_parse.c
index e4687091b..d878b80cc 100644
--- a/fuzzing/fuzz_uri_parse.c
+++ b/fuzzing/fuzz_uri_parse.c
@@ -12,7 +12,7 @@ LLVMFuzzerTestOneInput (const unsigned char *data, size_t size)
 
   /* ignore @size (g_uri_parse() doesn’t support it); ensure @data is nul-terminated */
   nul_terminated_data = (unsigned char *) g_strndup ((const gchar *) data, size);
-  uri = g_uri_parse ((const gchar *) data, flags, NULL);
+  uri = g_uri_parse ((const gchar *) nul_terminated_data, flags, NULL);
   g_free (nul_terminated_data);
 
   if (uri == NULL)