diff --git a/.github/workflows/test-sys.yaml b/.github/workflows/test-sys.yaml
index 9be428ebd23..46d4a769798 100644
--- a/.github/workflows/test-sys.yaml
+++ b/.github/workflows/test-sys.yaml
@@ -219,7 +219,7 @@ jobs:
           make test-integration-cli
         env:
           TARGET: x86_64-pc-windows-msvc
-          TARGET_DIR: TARGET_DIR: target/x86_64-pc-windows-msvc/release
+          TARGET_DIR: target/x86_64-pc-windows-msvc/release
           CARGO_TARGET: --target x86_64-pc-windows-msvc
       - name: Test
         if: matrix.run_test && matrix.os != 'windows-2019'
diff --git a/lib/compiler-singlepass/src/emitter_arm64.rs b/lib/compiler-singlepass/src/emitter_arm64.rs
index 18946e89351..23ca12c45d5 100644
--- a/lib/compiler-singlepass/src/emitter_arm64.rs
+++ b/lib/compiler-singlepass/src/emitter_arm64.rs
@@ -3198,8 +3198,10 @@ pub fn gen_std_trampoline_arm64(
         ; ret
     );
 
+    let mut body = a.finalize().unwrap();
+    body.shrink_to_fit();
     Ok(FunctionBody {
-        body: a.finalize().unwrap().to_vec(),
+        body,
         unwind_info: None,
     })
 }
@@ -3353,8 +3355,10 @@ pub fn gen_std_dynamic_import_trampoline_arm64(
     // Return.
     a.emit_ret()?;
 
+    let mut body = a.finalize().unwrap();
+    body.shrink_to_fit();
     Ok(FunctionBody {
-        body: a.finalize().unwrap().to_vec(),
+        body,
         unwind_info: None,
     })
 }
@@ -3532,7 +3536,9 @@ pub fn gen_import_call_trampoline_arm64(
     }
     a.emit_b_register(GPR::X16)?;
 
-    let section_body = SectionBody::new_with_vec(a.finalize().unwrap().to_vec());
+    let mut contents = a.finalize().unwrap();
+    contents.shrink_to_fit();
+    let section_body = SectionBody::new_with_vec(contents);
 
     Ok(CustomSection {
         protection: CustomSectionProtection::ReadExecute,
diff --git a/lib/compiler-singlepass/src/machine_x64.rs b/lib/compiler-singlepass/src/machine_x64.rs
index 58b2422924b..2bfeaa9d6d6 100644
--- a/lib/compiler-singlepass/src/machine_x64.rs
+++ b/lib/compiler-singlepass/src/machine_x64.rs
@@ -7736,8 +7736,10 @@ impl Machine for MachineX86_64 {
 
         a.emit_ret()?;
 
+        let mut body = a.finalize().unwrap();
+        body.shrink_to_fit();
         Ok(FunctionBody {
-            body: a.finalize().unwrap().to_vec(),
+            body,
             unwind_info: None,
         })
     }
@@ -7858,8 +7860,10 @@ impl Machine for MachineX86_64 {
         // Return.
         a.emit_ret()?;
 
+        let mut body = a.finalize().unwrap();
+        body.shrink_to_fit();
         Ok(FunctionBody {
-            body: a.finalize().unwrap().to_vec(),
+            body,
             unwind_info: None,
         })
     }
@@ -8024,7 +8028,9 @@ impl Machine for MachineX86_64 {
         }
         a.emit_host_redirection(GPR::RAX)?;
 
-        let section_body = SectionBody::new_with_vec(a.finalize().unwrap().to_vec());
+        let mut contents = a.finalize().unwrap();
+        contents.shrink_to_fit();
+        let section_body = SectionBody::new_with_vec(contents);
 
         Ok(CustomSection {
             protection: CustomSectionProtection::ReadExecute,