diff --git a/lang/cem/ctest/ctstruct/str.c b/lang/cem/ctest/ctstruct/str.c
index 79fb2866e..584f5ba5b 100644
--- a/lang/cem/ctest/ctstruct/str.c
+++ b/lang/cem/ctest/ctstruct/str.c
@@ -153,7 +153,7 @@ struct w3 setp1(count) {
 		return(myp) ;
 	}
 	myp = setp1(count-1) ;
-	myp.w3_a[count-1] = 99-count ;
+	myp.w3_a[count-1] = 99-count-1 ;
 	return(myp) ;
 }