diff --git a/vlib/v/fmt/fmt.v b/vlib/v/fmt/fmt.v
index 865f4243b8..f45d7419ec 100644
--- a/vlib/v/fmt/fmt.v
+++ b/vlib/v/fmt/fmt.v
@@ -1103,6 +1103,9 @@ pub fn (mut f Fmt) global_decl(node ast.GlobalDecl) {
 	}
 	for field in node.fields {
 		f.comments(field.comments, inline: true)
+		if field.is_volatile {
+			f.write('volatile ')
+		}
 		f.write('$field.name ')
 		f.write(strings.repeat(` `, max - field.name.len))
 		if field.has_expr {
diff --git a/vlib/v/fmt/tests/global_keep.vv b/vlib/v/fmt/tests/global_keep.vv
index e809f3d2fe..a16bcb3db4 100644
--- a/vlib/v/fmt/tests/global_keep.vv
+++ b/vlib/v/fmt/tests/global_keep.vv
@@ -1,3 +1,7 @@
+struct TestInt {
+	i int
+}
+
 __global x = bool(true)
 __global y f32
 __global ()
@@ -6,5 +10,8 @@ __global (
 	foo  = int(5)
 )
 __global (
-	a int
+	a        int
+	volatile test_int = TestInt{
+		i: 0
+	}
 )