diff --git a/libasn1parser/asn1p_expr.c b/libasn1parser/asn1p_expr.c
index 755196f3..c3c31f2c 100644
--- a/libasn1parser/asn1p_expr.c
+++ b/libasn1parser/asn1p_expr.c
@@ -46,7 +46,7 @@ asn1p_expr_clone(asn1p_expr_t *expr, int skip_extensions) {
 	CLCOPY(meta_type);
 	CLCOPY(expr_type);
 	CLCOPY(tag);
-	CLCOPY(marker);		/* OPTIONAL/DEFAULT */
+	CLCOPY(marker.flags);		/* OPTIONAL/DEFAULT */
 	CLCOPY(module);
 	CLCOPY(_mark);
 
@@ -62,6 +62,7 @@ asn1p_expr_clone(asn1p_expr_t *expr, int skip_extensions) {
 	CLCLONE(combined_constraints, asn1p_constraint_clone);
 	CLCLONE(params, asn1p_paramlist_clone);
 	CLCLONE(value, asn1p_value_clone);
+	CLCLONE(marker.default_value, asn1p_value_clone);
 	CLCLONE(with_syntax, asn1p_wsyntx_clone);
 
 	/*
@@ -128,6 +129,8 @@ asn1p_expr_free(asn1p_expr_t *expr) {
 			asn1p_paramlist_free(expr->params);
 		if(expr->value)
 			asn1p_value_free(expr->value);
+		if(expr->marker.default_value)
+			asn1p_value_free(expr->marker.default_value);
 		if(expr->with_syntax)
 			asn1p_wsyntx_free(expr->with_syntax);
 
diff --git a/libasn1parser/asn1p_expr.h b/libasn1parser/asn1p_expr.h
index 2c284ff0..4cdcd41f 100644
--- a/libasn1parser/asn1p_expr.h
+++ b/libasn1parser/asn1p_expr.h
@@ -173,11 +173,14 @@ typedef struct asn1p_expr_s {
 		asn1_integer_t tag_value;
 	} tag;
 
-	enum asn1p_expr_marker_e {
-		EM_NOMARK,
-		EM_INDIRECT	= 0x01,	/* 0001: Represent as pointer */
-		EM_OPTIONAL	= 0x03,	/* 0011: Optional member */
-		EM_DEFAULT	= 0x07,	/* 0111: FIXME: store the value */
+	struct asn1p_expr_marker_s {
+		enum asn1p_expr_marker_e {
+			EM_NOMARK,
+			EM_INDIRECT	= 0x01,	/* 0001: Represent as pointer */
+			EM_OPTIONAL	= 0x03,	/* 0011: Optional member */
+			EM_DEFAULT	= 0x07,	/* 0111: default_value */
+		} flags;
+		asn1p_value_t *default_value;	/* For EM_DEFAULT case */
 	} marker;
 	int unique;	/* UNIQUE */