diff --git a/exec/exec.go b/exec/exec.go
index a8f4a6bd..2fa659ed 100644
--- a/exec/exec.go
+++ b/exec/exec.go
@@ -111,7 +111,7 @@ func RunCommandExt(cmd *exec.Cmd, opts CmdOpts) (string, error) {
 		return "", err
 	}
 
-	done := make(chan error)
+	done := make(chan error, 1)
 	go func() { done <- cmd.Wait() }()
 
 	// Start a timer