diff --git a/Makefile b/Makefile
index 550945abd30..3fa863c49b9 100644
--- a/Makefile
+++ b/Makefile
@@ -21,5 +21,5 @@ test: glcpp
 	@(cd tests; ./glcpp-test)
 
 clean:
-	rm -f glcpp-lex.c glcpp-parse.c *.o *~
+	rm -f glcpp glcpp-lex.c glcpp-parse.c *.o *~
 	rm -f tests/*.out tests/*.gcc tests/*.expected tests/*~
diff --git a/glcpp-parse.y b/glcpp-parse.y
index f972ec372b8..58afd724b6a 100644
--- a/glcpp-parse.y
+++ b/glcpp-parse.y
@@ -177,13 +177,20 @@ argument:
 |	argument word {
 		_string_list_append_item ($1, $2);
 		talloc_free ($2);
+		$$ = $1;
 	}
 |	argument SPACE word {
 		_string_list_append_item ($1, " ");
 		_string_list_append_item ($1, $3);
 		talloc_free ($3);
+		$$ = $1;
+	}
+|	argument '(' argument ')' {
+		_string_list_append_item ($1, "(");
+		_string_list_append_list ($1, $3);
+		_string_list_append_item ($1, ")");
+		$$ = $1;
 	}
-|	argument '(' argument ')'
 ;
 
 directive_with_newline: