diff --git a/package-lock.json b/package-lock.json
index b090649..e093f3a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@logigator/logigator-simulation",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@logigator/logigator-simulation",
-      "version": "1.2.0",
+      "version": "1.2.1",
       "license": "MIT",
       "dependencies": {
         "nan": "^2.15.0",
diff --git a/package.json b/package.json
index 56d2d6a..b6c5a3e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@logigator/logigator-simulation",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "description": "Multi-Threaded Simulator for Logic Circuits as Node.JS Native C++ or WebAssembly Module.",
   "main": "index.js",
   "homepage": "https://github.com/logigator/logigator-simulation#readme",
diff --git a/src/components/dec.h b/src/components/dec.h
index ce67e9a..e66440a 100644
--- a/src/components/dec.h
+++ b/src/components/dec.h
@@ -23,8 +23,8 @@ class DEC :
 		for (size_t i = 0; i < inputCount; i++) {
 			index |= static_cast<size_t>(inputs[i].getPowered()) << i;
 		}
-		outputs[index].setPowered(true);
 		outputs[prev].setPowered(false);
+		outputs[index].setPowered(true);
 		prev = index;
 	}
 private:
diff --git a/start_env.sh b/start_env.sh
new file mode 100755
index 0000000..25fe37e
--- /dev/null
+++ b/start_env.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+docker run -it --rm -v "$PWD":/app -w /app node:16 bash
diff --git a/webAssembly/install_unix.sh b/webAssembly/install_unix.sh
index 3e3c916..f50087e 100644
--- a/webAssembly/install_unix.sh
+++ b/webAssembly/install_unix.sh
@@ -5,7 +5,7 @@ if [ -f 'webAssembly/dist/logigator-simulation.wasm' ] && [ ! -d 'webAssembly/em
 fi
 
 if [ ! -d 'webAssembly/emscripten' ]; then
-  git clone https://github.com/emscripten-core/emsdk.git webAssembly/emscripten || exit 1
+  git clone --depth 1 --branch 2.0.34 https://github.com/emscripten-core/emsdk.git webAssembly/emscripten || exit 1
   bash webAssembly/emscripten/emsdk install latest
 fi