diff --git a/src/internal/coverage/pkid.go b/src/internal/coverage/pkid.go
index 46de9fd0ce..d2449a65ac 100644
--- a/src/internal/coverage/pkid.go
+++ b/src/internal/coverage/pkid.go
@@ -56,6 +56,7 @@ var rtPkgs = [...]string{
 	"internal/bytealg",
 	"internal/goexperiment",
 	"internal/runtime/syscall",
+	"internal/stringslite",
 	"runtime",
 }