diff --git a/c/libuv/error.go b/c/libuv/error.go
index 3b67a22b..309604e4 100644
--- a/c/libuv/error.go
+++ b/c/libuv/error.go
@@ -1,10 +1,11 @@
 package libuv
 
 import (
+	_ "unsafe"
+
 	"github.com/goplus/llgo/c"
 	"github.com/goplus/llgo/c/net"
 	"github.com/goplus/llgo/c/syscall"
-	_ "unsafe"
 )
 
 const (
diff --git a/c/libuv/fs.go b/c/libuv/fs.go
index 0de0a458..42afbe8a 100644
--- a/c/libuv/fs.go
+++ b/c/libuv/fs.go
@@ -1,8 +1,9 @@
 package libuv
 
 import (
-	"github.com/goplus/llgo/c"
 	_ "unsafe"
+
+	"github.com/goplus/llgo/c"
 )
 
 const (
diff --git a/c/libuv/libuv.go b/c/libuv/libuv.go
index 11a36700..ff1c7c78 100644
--- a/c/libuv/libuv.go
+++ b/c/libuv/libuv.go
@@ -1,9 +1,10 @@
 package libuv
 
 import (
+	_ "unsafe"
+
 	"github.com/goplus/llgo/c"
 	"github.com/goplus/llgo/c/net"
-	_ "unsafe"
 )
 
 const (
diff --git a/c/libuv/net.go b/c/libuv/net.go
index 3fbb8f96..28cf10b6 100644
--- a/c/libuv/net.go
+++ b/c/libuv/net.go
@@ -1,9 +1,10 @@
 package libuv
 
 import (
+	_ "unsafe"
+
 	"github.com/goplus/llgo/c"
 	"github.com/goplus/llgo/c/net"
-	_ "unsafe"
 )
 
 const (
diff --git a/c/libuv/signal.go b/c/libuv/signal.go
index 8aad3b0e..a3ede8ff 100644
--- a/c/libuv/signal.go
+++ b/c/libuv/signal.go
@@ -1,8 +1,9 @@
 package libuv
 
 import (
-	"github.com/goplus/llgo/c"
 	_ "unsafe"
+
+	"github.com/goplus/llgo/c"
 )
 
 /* Handle types. */
diff --git a/c/libuv/timer.go b/c/libuv/timer.go
index feeabe5a..98970402 100644
--- a/c/libuv/timer.go
+++ b/c/libuv/timer.go
@@ -1,8 +1,9 @@
 package libuv
 
 import (
-	"github.com/goplus/llgo/c"
 	_ "unsafe"
+
+	"github.com/goplus/llgo/c"
 )
 
 // ----------------------------------------------