diff --git a/testscript/testdata/interrupt_implicit.txt b/testscript/testdata/interrupt_implicit.txt
new file mode 100644
index 0000000..6ea1c39
--- /dev/null
+++ b/testscript/testdata/interrupt_implicit.txt
@@ -0,0 +1,4 @@
+# Let testscript stop signalcatcher at the end of the testscript.
+
+signalcatcher &
+waitfile catchsignal
diff --git a/testscript/testscript.go b/testscript/testscript.go
index 360398f..1146050 100644
--- a/testscript/testscript.go
+++ b/testscript/testscript.go
@@ -651,7 +651,11 @@ func (ts *TestScript) run() {
 	for _, bg := range ts.background {
 		interruptProcess(bg.cmd.Process)
 	}
-	ts.cmdWait(false, nil)
+	// On some platforms like Windows, we kill background commands directly
+	// as we can't send them an interrupt signal, so they always fail.
+	// Moreover, it's relatively common for a process to fail when interrupted.
+	// Once we've reached the end of the script, ignore the status of background commands.
+	ts.waitBackground(false)
 
 	// If we reached here but we've failed (probably because ContinueOnError
 	// was set), don't wipe the log and print "PASS".