diff --git a/lib/libc/regex/grot/tests b/lib/libc/regex/grot/tests
index 95a21bb0fdd..050e7b25ab1 100644
--- a/lib/libc/regex/grot/tests
+++ b/lib/libc/regex/grot/tests
@@ -472,3 +472,6 @@ abcdefghijklmnop	i	abcdefghijklmnop	abcdefghijklmnop
 abcdefghijklmnopqrstuv	i	abcdefghijklmnopqrstuv	abcdefghijklmnopqrstuv
 (ALAK)|(ALT[AB])|(CC[123]1)|(CM[123]1)|(GAMC)|(LC[23][EO ])|(SEM[1234])|(SL[ES][12])|(SLWW)|(SLF )|(SLDT)|(VWH[12])|(WH[34][EW])|(WP1[ESN])	-	CC11	CC11
 CC[13]1|a{21}[23][EO][123][Es][12]a{15}aa[34][EW]aaaaaaa[X]a	-	CC11	CC11
+# PR 130504
+(.|())(b)	-	ab	ab
+(()|.)(b)	-	ab	ab