diff --git a/src/client/main_fsm.c b/src/client/main_fsm.c
index b94af26..0674f6c 100644
--- a/src/client/main_fsm.c
+++ b/src/client/main_fsm.c
@@ -70,7 +70,7 @@
 
 	env[i++] = talloc_asprintf(env, "REMSIM_SIM_VCC=%u", bc->last_status.flags.vcc_present);
 	env[i++] = talloc_asprintf(env, "REMSIM_SIM_RST=%u", bc->last_status.flags.reset_active);
-	/* TODO: SIM card state CLK */
+	env[i++] = talloc_asprintf(env, "REMSIM_SIM_CLK=%u", bc->last_status.flags.clk_active);
 
 	env[i++] = talloc_asprintf(env, "REMSIM_CAUSE=%s", cause);