diff --git a/lib/asn1/parse.y b/lib/asn1/parse.y
index 5d6f7121d..9b6cf7545 100644
--- a/lib/asn1/parse.y
+++ b/lib/asn1/parse.y
@@ -64,6 +64,7 @@ static void append (Member *l, Member *r);
 %token INTEGER SEQUENCE OF OCTET STRING GeneralizedTime GeneralString
 %token BIT APPLICATION OPTIONAL EEQUAL TBEGIN END DEFINITIONS EXTERNAL
 %token DOTDOT
+%token IMPORTS FROM
 %token <name> IDENTIFIER 
 %token <constant> CONSTANT
 
@@ -82,16 +83,24 @@ specification	:
 		| specification declaration
 		;
 
-declaration	: extern_decl
+declaration	: imports_decl
 		| type_decl
 		| constant_decl
 		;
 
-extern_decl	: IDENTIFIER EXTERNAL
+referencenames	: IDENTIFIER ',' referencenames
 		{
 			Symbol *s = addsym($1);
 			s->stype = Stype;
 		}
+		| IDENTIFIER
+		{
+			Symbol *s = addsym($1);
+			s->stype = Stype;
+		}
+		;
+
+imports_decl	: IMPORTS referencenames FROM IDENTIFIER ';'
 		;
 
 type_decl	: IDENTIFIER EEQUAL type
@@ -121,6 +130,11 @@ type		: INTEGER     { $$ = new_type(TInteger); }
 				      UINT_MAX);
 		    $$ = new_type(TUInteger);
 		}
+                | INTEGER '{' bitdecls '}'
+                {
+			$$ = new_type(TInteger);
+			$$->members = $3;
+                }
 		| OCTET STRING { $$ = new_type(TOctetString); }
 		| GeneralString { $$ = new_type(TGeneralString); }
 		| GeneralizedTime { $$ = new_type(TGeneralizedTime); }