diff --git a/original.go b/original.go
index 428e385..6250072 100644
--- a/original.go
+++ b/original.go
@@ -61,6 +61,18 @@ func Printf(s string, a ...any) {
 	realPrintf(s, a...)
 }
 
+func Sprintf(s string, a ...any) string {
+	if ! PRINTLN.Ok() { return ""}
+	if ! PRINTLN.b { return ""}
+	return realSprintf(s, a...)
+}
+
+func Sprintln(s string, a ...any) string {
+	if ! PRINTLN.Ok() { return ""}
+	if ! PRINTLN.b { return ""}
+	return realSprintln(s, a...)
+}
+
 func Fatalln(a ...any) {
 	realFatalln(a...)
 }
diff --git a/reallog.go b/reallog.go
index 5a172b2..0f6bc33 100644
--- a/reallog.go
+++ b/reallog.go
@@ -36,6 +36,14 @@ func realPrintf(s string, a ...any) {
 	}
 }
 
+func realSprintf(s string, a ...any) string {
+	return fmt.Sprintf(s, a...)
+}
+
+func realSprintln(s string, a ...any) string {
+	return fmt.Sprintf(s, a...) + "\n"
+}
+
 func realFatalln(a ...any) {
 	reallog.Fatalln(a...)
 }