diff --git a/Makefile b/Makefile
index 8e9b34172..66d272670 100644
--- a/Makefile
+++ b/Makefile
@@ -68,13 +68,22 @@ target/wasm32-unknown-unknown/debug/aurora_engine.wasm: Cargo.toml Cargo.lock $(
 test: test-mainnet
 
 mainnet-test-build: FEATURES=mainnet,integration-test,meta-call
-mainnet-test-build: mainnet-release.wasm
+mainnet-test-build: mainnet-test.wasm
 
 betanet-test-build: FEATURES=betanet,integration-test,meta-call
-betanet-test-build: betanet-release.wasm
+betanet-test-build: betanet-test.wasm
 
 testnet-test-build: FEATURES=testnet,integration-test,meta-call
-testnet-test-build: testnet-release.wasm
+testnet-test-build: testnet-test.wasm
+
+mainnet-test.wasm: target/wasm32-unknown-unknown/release/aurora_engine.wasm
+	cp $< $@
+
+testnet-test.wasm: target/wasm32-unknown-unknown/release/aurora_engine.wasm
+	cp $< $@
+
+betanet-test.wasm: target/wasm32-unknown-unknown/release/aurora_engine.wasm
+	cp $< $@
 
 test-mainnet: mainnet-test-build
 	$(CARGO) test --features mainnet-test
diff --git a/src/lib.rs b/src/lib.rs
index f6cdba375..8b50f334d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -189,7 +189,14 @@ mod contract {
     /// MUTATIVE METHODS
     ///
 
+    #[cfg(feature = "integration-test")]
+    #[no_mangle]
+    pub extern "C" fn deploy_code() {
+        sdk::panic_utf8(b"ERR_DEPLOYED_TEST_VERSION");
+    }
+
     /// Deploy code into the EVM.
+    #[cfg(not(feature = "integration-test"))]
     #[no_mangle]
     pub extern "C" fn deploy_code() {
         let input = sdk::read_input();
diff --git a/src/test_utils/mod.rs b/src/test_utils/mod.rs
index c8e8fc2aa..d70112403 100644
--- a/src/test_utils/mod.rs
+++ b/src/test_utils/mod.rs
@@ -29,7 +29,7 @@ use crate::types::AccountId;
     not(any(feature = "testnet", feature = "betanet"))
 ))]
 lazy_static_include::lazy_static_include_bytes! {
-    EVM_WASM_BYTES => "mainnet-release.wasm"
+    EVM_WASM_BYTES => "mainnet-test.wasm"
 }
 
 #[cfg(all(
@@ -37,7 +37,7 @@ lazy_static_include::lazy_static_include_bytes! {
     not(any(feature = "mainnet", feature = "betanet"))
 ))]
 lazy_static_include::lazy_static_include_bytes! {
-    EVM_WASM_BYTES => "testnet-release.wasm"
+    EVM_WASM_BYTES => "testnet-test.wasm"
 }
 
 #[cfg(all(
@@ -45,7 +45,7 @@ lazy_static_include::lazy_static_include_bytes! {
     not(any(feature = "mainnet", feature = "testnet"))
 ))]
 lazy_static_include::lazy_static_include_bytes! {
-    EVM_WASM_BYTES => "betanet-release.wasm"
+    EVM_WASM_BYTES => "betanet-test.wasm"
 }
 
 // TODO(Copied from #84): Make sure that there is only one Signer after both PR are merged.