diff --git a/ext/vpx/gstvp8enc.c b/ext/vpx/gstvp8enc.c
index f203cdc07d..cfb5a2f6e9 100644
--- a/ext/vpx/gstvp8enc.c
+++ b/ext/vpx/gstvp8enc.c
@@ -1461,6 +1461,10 @@ gst_vp8_enc_stop (GstVideoEncoder * video_encoder)
 
   gst_tag_setter_reset_tags (GST_TAG_SETTER (encoder));
 
+  g_free (encoder->multipass_cache_file);
+  encoder->multipass_cache_file = NULL;
+  encoder->multipass_cache_idx = 0;
+
   return TRUE;
 }
 
diff --git a/ext/vpx/gstvp9enc.c b/ext/vpx/gstvp9enc.c
index 08ec6f2b35..ec2ea21633 100644
--- a/ext/vpx/gstvp9enc.c
+++ b/ext/vpx/gstvp9enc.c
@@ -1434,6 +1434,10 @@ gst_vp9_enc_stop (GstVideoEncoder * video_encoder)
 
   gst_tag_setter_reset_tags (GST_TAG_SETTER (encoder));
 
+  g_free (encoder->multipass_cache_file);
+  encoder->multipass_cache_file = NULL;
+  encoder->multipass_cache_idx = 0;
+
   return TRUE;
 }