diff --git a/lib/frontend/src/frontend.rs b/lib/frontend/src/frontend.rs
index 3c92e24bcc..20c660a1f0 100644
--- a/lib/frontend/src/frontend.rs
+++ b/lib/frontend/src/frontend.rs
@@ -136,7 +136,7 @@ impl<'short, 'long, Variable> InstBuilderBase<'short> for FuncInstBuilder<'short
                         match data.analyze_branch(&self.builder.func.dfg.value_lists) {
                             BranchInfo::SingleDest(_, args) => {
                                 args.iter()
-                                    .map(|arg| self.builder.func.dfg.value_type(arg.clone()))
+                                    .map(|arg| self.builder.func.dfg.value_type(*arg))
                                     .collect()
                             }
                             _ => panic!("should not happen"),
diff --git a/lib/wasm/src/code_translator.rs b/lib/wasm/src/code_translator.rs
index 067834827b..f4547f5003 100644
--- a/lib/wasm/src/code_translator.rs
+++ b/lib/wasm/src/code_translator.rs
@@ -567,7 +567,7 @@ fn translate_operator(
                             acc.insert(depth as usize, branch_ebb);
                             return acc;
                         };
-                        let branch_ebb = acc[&(depth as usize)].clone();
+                        let branch_ebb = acc[&(depth as usize)];
                         builder.insert_jump_table_entry(jt, index, branch_ebb);
                         acc
                     });
diff --git a/lib/wasm/src/module_translator.rs b/lib/wasm/src/module_translator.rs
index 81b0baa654..eeaf5f67e5 100644
--- a/lib/wasm/src/module_translator.rs
+++ b/lib/wasm/src/module_translator.rs
@@ -108,7 +108,7 @@ pub fn translate_module(
                                     runtime.declare_memory(mem);
                                 }
                                 Import::Global(glob) => {
-                                    runtime.declare_global(glob.clone());
+                                    runtime.declare_global(glob);
                                     globals.push(glob);
                                 }
                                 Import::Table(tab) => {
diff --git a/lib/wasm/src/sections_translator.rs b/lib/wasm/src/sections_translator.rs
index af11570763..2605855e44 100644
--- a/lib/wasm/src/sections_translator.rs
+++ b/lib/wasm/src/sections_translator.rs
@@ -211,7 +211,7 @@ pub fn parse_global_section(
             mutability: mutability != 0,
             initializer: initializer,
         };
-        runtime.declare_global(global.clone());
+        runtime.declare_global(global);
         globals.push(global);
         match *parser.read() {
             ParserState::EndGlobalSectionEntry => (),