diff --git a/src/cmd/compile/internal/ssa/stmtlines_test.go b/src/cmd/compile/internal/ssa/stmtlines_test.go
index d0f09da86ff..b55ac2b3f4e 100644
--- a/src/cmd/compile/internal/ssa/stmtlines_test.go
+++ b/src/cmd/compile/internal/ssa/stmtlines_test.go
@@ -139,7 +139,7 @@ func TestStmtLines(t *testing.T) {
 
 	var m float64
 	if runtime.GOARCH == "amd64" {
-		m = 0.011 // > 98.9% obtained on amd64, no backsliding
+		m = 0.0111 // > 98.89% obtained on amd64, no backsliding
 	} else if runtime.GOARCH == "riscv64" {
 		m = 0.03 // XXX temporary update threshold to 97% for regabi
 	} else {