diff --git a/toolkit/tools/imagegen/installutils/installutils.go b/toolkit/tools/imagegen/installutils/installutils.go
index 67b007f4bd9..c08101f42dd 100644
--- a/toolkit/tools/imagegen/installutils/installutils.go
+++ b/toolkit/tools/imagegen/installutils/installutils.go
@@ -1842,7 +1842,7 @@ func runPostInstallScripts(installChroot *safechroot.Chroot, config configuratio
 		ReportActionf("Running post-install script: %s", path.Base(script.Path))
 		logger.Log.Infof("Running post-install script: %s", script.Path)
 		err = installChroot.UnsafeRun(func() error {
-			err := shell.ExecuteLive(squashErrors, shell.ShellProgram, "-c", scriptPath, script.Args)
+			err := shell.ExecuteLive(squashErrors, shell.ShellProgram, "-c", fmt.Sprintf("%s %s", scriptPath, script.Args))
 
 			if err != nil {
 				return err