diff --git a/src/elements/global_entry.rs b/src/elements/global_entry.rs
index 9fb23bb..9a79f4d 100644
--- a/src/elements/global_entry.rs
+++ b/src/elements/global_entry.rs
@@ -12,6 +12,10 @@ impl GlobalEntry {
     pub fn global_type(&self) -> &GlobalType { &self.global_type }
     /// Initialization expression (opcodes) for global.
     pub fn init_expr(&self) -> &InitExpr { &self.init_expr }
+    /// Global type (mutable)
+    pub fn global_type_mut(&mut self) -> &mut GlobalType { &mut self.global_type }
+    /// Initialization expression (opcodes) for global (mutable)
+    pub fn init_expr_mut(&mut self) -> &mut InitExpr { &mut self.init_expr }
 }
 
 impl Deserialize for GlobalEntry {