diff --git a/ADSMSettings/management/commands/compilestatic.py b/ADSMSettings/management/commands/compilestatic.py
index 1b654abae..7443735af 100644
--- a/ADSMSettings/management/commands/compilestatic.py
+++ b/ADSMSettings/management/commands/compilestatic.py
@@ -1,5 +1,6 @@
 import subprocess
 import os
+import platform
 
 from django.core.management import BaseCommand, call_command
 from django.conf import settings
@@ -32,7 +33,7 @@ def handle(self, *args, **options):
         os.chdir(settings.BASE_DIR)
 
         command_path = os.path.join('.', 'node_modules', '.bin', 'webpack')
-        command = command_path + ' --config %s' % config_file
-        webpack = subprocess.Popen(command, cwd=os.path.join(settings.BASE_DIR), shell=True)
+        command = [command_path, '--config %s' % config_file]
+        webpack = subprocess.Popen(command, cwd=os.path.join(settings.BASE_DIR), shell=(platform.system() != 'Darwin'))
         webpack.communicate()  # Wait for webpack to finish compile
         call_command('collectstatic')
diff --git a/ADSMSettings/management/commands/devserver.py b/ADSMSettings/management/commands/devserver.py
index 4e69d8b98..2d9df20ac 100644
--- a/ADSMSettings/management/commands/devserver.py
+++ b/ADSMSettings/management/commands/devserver.py
@@ -1,5 +1,6 @@
 import subprocess
 import os
+import platform
 
 from django.core.management import BaseCommand, call_command
 from django.conf import settings
@@ -30,6 +31,6 @@ def handle(self, *args, **options):
             config_file = 'webpack.config.js'
 
         command_path = os.path.join('.', 'node_modules', '.bin', 'webpack')
-        command = command_path + ' --config %s --watch' % config_file
-        webpack = subprocess.Popen(command, cwd=os.path.join(settings.BASE_DIR), shell=True)
+        command = [command_path, '--config %s --watch' % config_file]
+        webpack = subprocess.Popen(command, cwd=os.path.join(settings.BASE_DIR), shell=(platform.system() != 'Darwin'))
         call_command('runserver')
diff --git a/ADSMSettings/utils.py b/ADSMSettings/utils.py
index 4ed2af3c3..902e863a3 100644
--- a/ADSMSettings/utils.py
+++ b/ADSMSettings/utils.py
@@ -316,7 +316,7 @@ def launch_external_program_and_exit(launch, code=0, close_self=True, cmd_args=N
     else:
         launch_args.update(preexec_fn=os.setsid)
         launch_args.update(start_new_session=True)
-    subprocess.Popen(launch, stdin=subprocess.PIPE, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, **launch_args)
+    subprocess.Popen(launch, stdin=subprocess.PIPE, shell=(platform.system() != 'Darwin'), stdout=subprocess.PIPE, stderr=subprocess.PIPE, **launch_args)
     if close_self:
         sys.exit(code)
 
@@ -327,7 +327,7 @@ def check_simulation_version():
     version = None
     try:
         executable = adsm_executable_command()[0]
-        process = subprocess.Popen(executable + " --version --silent", shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        process = subprocess.Popen([executable, "--version --silent"], shell=(platform.system() != 'Darwin'), stdout=subprocess.PIPE, stderr=subprocess.PIPE)
         try:
             output, error = process.communicate(timeout=200)
             exit_code = process.returncode
@@ -356,7 +356,7 @@ def npu_update_info():
     new_version = None
     try:
         npu = os.path.join(settings.BASE_DIR, 'npu'+settings.EXTENSION)
-        process = subprocess.Popen(npu + " --check_update --silent", shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        process = subprocess.Popen([npu, "--check_update", "--silent"], shell=(platform.system() != 'Darwin'), stdout=subprocess.PIPE, stderr=subprocess.PIPE)
         try:
             output, error = process.communicate(timeout=60000)
             exit_code = process.returncode
diff --git a/setup.py b/setup.py
index 1c509cf34..0f7e009dc 100644
--- a/setup.py
+++ b/setup.py
@@ -2,6 +2,7 @@
 import os
 import stat
 import pip
+import platform
 import shutil
 import subprocess
 
@@ -210,8 +211,9 @@ def run(self):
 
         print("Preparing to pack client files...")
         webpack_command_path = os.path.join('.', 'node_modules', '.bin', 'webpack')
-        webpack_command = webpack_command_path + ' --config webpack.config.js'
-        webpack = subprocess.Popen(webpack_command, cwd=os.path.join(settings.BASE_DIR), shell=True)
+        webpack_command = [webpack_command_path, '--config webpack.config.js']
+        webpack = subprocess.Popen(webpack_command, cwd=os.path.join(settings.BASE_DIR), shell=(platform.system() != 'Darwin'))
+
         print("Packing client files...")
         outs, errs = webpack.communicate()  # TODO: Possible error checking
         print("Done packing.")