diff --git a/src/frontend/inp.c b/src/frontend/inp.c
index 7d01822a7..4d99bc132 100644
--- a/src/frontend/inp.c
+++ b/src/frontend/inp.c
@@ -296,6 +296,14 @@ line_free_x(struct line *deck, bool recurse)
 }
 
 
+/* free mc_deck */
+void
+mc_free(void)
+{
+    line_free_x(mc_deck, TRUE);
+}
+
+
 /* The routine to source a spice input deck. We read the deck in, take
  * out the front-end commands, and create a CKT structure. Also we
  * filter out the following cards: .save, .width, .four, .print, and
diff --git a/src/include/ngspice/fteext.h b/src/include/ngspice/fteext.h
index 18a2db7b5..4b38f03d1 100644
--- a/src/include/ngspice/fteext.h
+++ b/src/include/ngspice/fteext.h
@@ -214,6 +214,7 @@ extern void inp_list(FILE *file, struct line *deck, struct line *extras, int typ
 extern struct line *inp_readall(FILE *fp, char *dir_name, bool comfile, bool intfile);
 extern FILE *inp_pathopen(char *name, char *mode);
 extern char *search_identifier(char *str, const char *identifier, char *str_begin);
+extern void mc_free(void);
 
 extern char** circarray;