diff --git a/src/test/test_controller_events.c b/src/test/test_controller_events.c
index 888f228ed1..ee35239e45 100644
--- a/src/test/test_controller_events.c
+++ b/src/test/test_controller_events.c
@@ -194,16 +194,17 @@ test_cntev_append_cell_stats(void *arg)
 
  done:
   tor_free(cp);
+  smartlist_free(event_parts);
 }
 
 static void
 test_cntev_format_cell_stats(void *arg)
 {
   char *event_string = NULL;
-  origin_circuit_t *ocirc;
-  or_circuit_t *or_circ;
+  origin_circuit_t *ocirc = NULL;
+  or_circuit_t *or_circ = NULL;
   cell_stats_t *cell_stats = NULL;
-  channel_tls_t *n_chan, *p_chan;
+  channel_tls_t *n_chan=NULL, *p_chan=NULL;
   (void)arg;
 
   n_chan = tor_malloc_zero(sizeof(channel_tls_t));
@@ -286,6 +287,10 @@ test_cntev_format_cell_stats(void *arg)
  done:
   tor_free(cell_stats);
   tor_free(event_string);
+  tor_free(or_circ);
+  tor_free(ocirc);
+  tor_free(p_chan);
+  tor_free(n_chan);
 }
 
 #define TEST(name, flags)                                               \