diff --git a/ODIN_II/SRC/simulate_blif.cpp b/ODIN_II/SRC/simulate_blif.cpp
index 38a32de..592b646 100644
--- a/ODIN_II/SRC/simulate_blif.cpp
+++ b/ODIN_II/SRC/simulate_blif.cpp
@@ -3380,6 +3380,8 @@
 						vtr::free(l->lines[l->count]->name);
 					if(l->lines[l->count]->pins)
 						vtr::free(l->lines[l->count]->pins);
+					if(l->lines[l->count]->pin_numbers)
+						vtr::free(l->lines[l->count]->pin_numbers);
 					vtr::free(l->lines[l->count]);
 				}
 			}