diff --git a/src/output/csv.c b/src/output/csv.c
index f3e6e335..dd94f28d 100644
--- a/src/output/csv.c
+++ b/src/output/csv.c
@@ -608,6 +608,7 @@ static int cleanup(struct sr_output *o)
 		g_free((gpointer)ctx->frame);
 		g_free((gpointer)ctx->comment);
 		g_free((gpointer)ctx->gnuplot);
+		g_free((gpointer)ctx->value);
 		g_free(ctx->previous_sample);
 		g_free(ctx->channels);
 		g_free(o->priv);