diff --git a/b2/HIERARCHY b/b2/HIERARCHY
index c41e209..a81ddb8 100644
--- a/b2/HIERARCHY
+++ b/b2/HIERARCHY
@@ -1,7 +1,7 @@
 <comp> = R<C<L;
 
-T:<comp> {
-	R:	{ R:#R TOL:%R };
-	C:	{ C:#F TOL:%C };
-	L:	{ L:#H TOL:%L };
+T=<comp> {
+	R:	{ R=#R TOL=%R };
+	C:	{ C=#F TOL=%C };
+	L:	{ L=#H TOL=%L };
 }
diff --git a/b2/chr.c b/b2/chr.c
index 8e98283..119ec77 100644
--- a/b2/chr.c
+++ b/b2/chr.c
@@ -130,7 +130,7 @@ static void dump_action(FILE *file, const struct action *act, int level)
 	if (act->fields) {
 		fprintf(file, " {");
 		for (field = act->fields; field; field = field->next) {
-			fprintf(file, " %s:", field->name);
+			fprintf(file, " %s=", field->name);
 			dump_field_decl(file, field);
 		}
 		fprintf(file, " }\n");
@@ -146,7 +146,7 @@ static void dump_one_field(FILE *file, const struct field *field, int level)
 	const struct selector *sel;
 	const struct condition *cond;
 
-	fprintf(file, "%*s%s:", level*INDENT, "", field->name);
+	fprintf(file, "%*s%s=", level*INDENT, "", field->name);
 	dump_field_decl(file, field);
 
 	fprintf(file, " {\n");
diff --git a/b2/lang.y b/b2/lang.y
index 1bd4d61..82cbde4 100644
--- a/b2/lang.y
+++ b/b2/lang.y
@@ -297,7 +297,7 @@ fields:
 	;
 
 field:
-	WORD ':' format
+	WORD '=' format
 		{
 			$$ = field_new($1, $3, top_field());
 		}