diff --git a/kernel/driver.cc b/kernel/driver.cc
index eae9c5276..792f78b7f 100644
--- a/kernel/driver.cc
+++ b/kernel/driver.cc
@@ -158,6 +158,7 @@ extern "C" {
 
 void yosys_atexit()
 {
+	RTLIL::OwningIdString::collect_garbage(false);
 #if defined(YOSYS_ENABLE_READLINE) || defined(YOSYS_ENABLE_EDITLINE)
 	if (!yosys_history_file.empty()) {
 #if defined(YOSYS_ENABLE_READLINE)