diff --git a/dumb/src/it/readam.c b/dumb/src/it/readam.c
index 9910b1d82..6a4994df5 100644
--- a/dumb/src/it/readam.c
+++ b/dumb/src/it/readam.c
@@ -331,6 +331,7 @@ static DUMB_IT_SIGDATA *it_riff_amff_load_sigdata( struct riff * stream )
 
 	sigdata->n_instruments = 0;
 	sigdata->n_orders = 0;
+	sigdata->restart_position = 0;
 
 	memset(sigdata->channel_volume, 64, DUMB_IT_N_CHANNELS);
 
@@ -553,6 +554,7 @@ static DUMB_IT_SIGDATA *it_riff_am_load_sigdata( struct riff * stream )
 
 	sigdata->n_instruments = 0;
 	sigdata->n_orders = 0;
+	sigdata->restart_position = 0;
 
 	memset(sigdata->channel_volume, 64, DUMB_IT_N_CHANNELS);
 
diff --git a/dumb/src/it/readdsmf.c b/dumb/src/it/readdsmf.c
index 275f37ffa..5db09a75c 100644
--- a/dumb/src/it/readdsmf.c
+++ b/dumb/src/it/readdsmf.c
@@ -265,6 +265,7 @@ static DUMB_IT_SIGDATA *it_riff_dsmf_load_sigdata( struct riff * stream )
 
 	sigdata->n_instruments = 0;
 	sigdata->n_orders = 0;
+	sigdata->restart_position = 0;
 
 	memset(sigdata->channel_volume, 64, DUMB_IT_N_CHANNELS);