diff --git a/tools/probetest.c b/tools/probetest.c
index d1d77b37a50238931975c9eed716015c7442ba0c..b4bb5aea9ed97650b9370bc80dfb0a4364a515b3 100644
--- a/tools/probetest.c
+++ b/tools/probetest.c
@@ -30,9 +30,9 @@ static int failures = 0;
 static void probe(AVProbeData *pd, int type, int p, int size)
 {
     int i = 0;
-    AVInputFormat *fmt;
+    AVInputFormat *fmt = NULL;
 
-    for (fmt = first_iformat; fmt != NULL; fmt = fmt->next) {
+    while ((fmt = av_iformat_next(fmt))) {
         if (fmt->flags & AVFMT_NOFILE)
             continue;
         if (fmt->read_probe) {