diff --git a/ets2panda/compiler/core/compilerImpl.cpp b/ets2panda/compiler/core/compilerImpl.cpp
index f62aaf1083f5cb9475524e7d843ab93790112a2d..0c66fb32c42b0dbaa7e81cb82a93afc9ad46e865 100644
--- a/ets2panda/compiler/core/compilerImpl.cpp
+++ b/ets2panda/compiler/core/compilerImpl.cpp
@@ -119,6 +119,7 @@ void HandleGenerateDecl(const parser::Program &program, util::DiagnosticEngine &
     }
     std::string result = program.Ast()->DumpDecl();
     result.erase(0, result.find_first_not_of('\n'));
+    result = "'use static'\n" + result;
 
     outFile << result;
     outFile.close();
diff --git a/ets2panda/test/declgen/class-expected.txt b/ets2panda/test/declgen/class-expected.txt
index 74dcb08e917a38ad5ee9709cd98b6dc34336fc84..443f6a2ee6957dfd8753ed0605de03499bb0e967 100644
--- a/ets2panda/test/declgen/class-expected.txt
+++ b/ets2panda/test/declgen/class-expected.txt
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
+'use static'
 export declare interface I0 {
   I0Method(a: string): String;
   
diff --git a/ets2panda/test/declgen/enum-expected.txt b/ets2panda/test/declgen/enum-expected.txt
index 0bff710d1fc55fa48285afee2e3f26bd08101f80..048eafcca47b44dbf2d8c0ed1e1ecd990c548e16 100644
--- a/ets2panda/test/declgen/enum-expected.txt
+++ b/ets2panda/test/declgen/enum-expected.txt
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
+'use static'
 export declare final class Direction extends BaseEnum<int> {
   
   
diff --git a/ets2panda/test/declgen/export-expected.txt b/ets2panda/test/declgen/export-expected.txt
index 487a95e02fe2fc78e3903c4e59084d8684439aef..4a5c3b6e472845e90d74b974ec5e32d2b6785554 100644
--- a/ets2panda/test/declgen/export-expected.txt
+++ b/ets2panda/test/declgen/export-expected.txt
@@ -12,5 +12,5 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
+'use static'
 export { union as union1 } from "./var";
\ No newline at end of file
diff --git a/ets2panda/test/declgen/function-expected.txt b/ets2panda/test/declgen/function-expected.txt
index 6212d507e84ca0e9ba6e83505d4a2935ce81c0f1..907c95b0501971d509c9adbc728ade562d69f6b2 100644
--- a/ets2panda/test/declgen/function-expected.txt
+++ b/ets2panda/test/declgen/function-expected.txt
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+ 'use static'
 export declare function add(x: number, y: number): double;
 
 export declare function greet(name: string, age?: number): String;
diff --git a/ets2panda/test/declgen/import-expected.txt b/ets2panda/test/declgen/import-expected.txt
index daaa85018d09067318156a99d38c956a2deba25a..9bcb9225654bf2c2f11292d375d4b3c2af718a1f 100644
--- a/ets2panda/test/declgen/import-expected.txt
+++ b/ets2panda/test/declgen/import-expected.txt
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
+'use static'
 import * as AllType from "./var";
 
 import { union as union1 } from "./var";
\ No newline at end of file
diff --git a/ets2panda/test/declgen/indirect_dependence-expected.txt b/ets2panda/test/declgen/indirect_dependence-expected.txt
index 0889fa1c7cd1296ad074ade8daa94f6b181b96c6..9a4918b560868d29b3b39d19770a035518b52c39 100644
--- a/ets2panda/test/declgen/indirect_dependence-expected.txt
+++ b/ets2panda/test/declgen/indirect_dependence-expected.txt
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
+'use static'
 export declare function foo(c: C): int;
 
 export declare function foo1(): D;
diff --git a/ets2panda/test/declgen/interface-expected.txt b/ets2panda/test/declgen/interface-expected.txt
index 0e45342f0c8f82f14888d0a26a68fe3a1301ce03..f43e9fdb2890974b9be9c66cfd14fdbc983ac7f5 100644
--- a/ets2panda/test/declgen/interface-expected.txt
+++ b/ets2panda/test/declgen/interface-expected.txt
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
+'use static'
 export declare interface User {
   abstract set id(id: number): void;
   
diff --git a/ets2panda/test/declgen/namespace-expected.txt b/ets2panda/test/declgen/namespace-expected.txt
index 8089251f18d803230d4730ab93563acb857c7932..d90fc8793c7a9aa95f45bd23a82672deda7d78e6 100644
--- a/ets2panda/test/declgen/namespace-expected.txt
+++ b/ets2panda/test/declgen/namespace-expected.txt
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
+'use static'
 export declare namespace MathOperations {
   
   let PI: double;
diff --git a/ets2panda/test/declgen/var-expected.txt b/ets2panda/test/declgen/var-expected.txt
index 2a92bb7cf43e592c558a4fa4ef5ce53e70998e71..ca601392c06a86dbee14fe0f14c34802f34a1cb3 100644
--- a/ets2panda/test/declgen/var-expected.txt
+++ b/ets2panda/test/declgen/var-expected.txt
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
+'use static'
 export declare let n: double;
 
 export declare let o: Object;