diff --git a/mytoncore/mytoncore.py b/mytoncore/mytoncore.py
index aff64285..48f8647a 100644
--- a/mytoncore/mytoncore.py
+++ b/mytoncore/mytoncore.py
@@ -1316,7 +1316,6 @@ def GetStake(self, account, args=None):
 			# Limit stake to maximum available amount minus 10 (for transaction fees)
 			if stake > account.balance - 10:
 				stake = account.balance - 10
-		#end if
 
 		pool_version = self.GetVersionFromCodeHash(account.codeHash)
 		is_single_nominator = pool_version is not None and 'spool' in pool_version
@@ -1331,9 +1330,10 @@ def GetStake(self, account, args=None):
 				self.local.add_log("Wrong stakePercent value. Using default stake.", "warning")
 			elif len(vconfig.validators) == 0:
 				stake = int(account.balance*sp/2)
+				if stake < config17["minStake"]:  # not enough funds to divide them by 2
+					stake = int(account.balance*sp)
 			elif len(vconfig.validators) > 0:
 				stake = int(account.balance*sp)
-		#end if
 
 		# Check if we have enough coins
 		if stake > config17["maxStake"]:
@@ -1348,10 +1348,8 @@ def GetStake(self, account, args=None):
 			text = "Don't have enough coins. stake: {stake}, account balance: {balance}".format(stake=stake, balance=account.balance)
 			# self.local.add_log(text, "error")
 			raise Exception(text)
-		#end if
 
 		return stake
-	#end define
 
 	def GetMaxFactor(self):
 		# Either use defined maxFactor, or set maximal allowed by config17
diff --git a/mytonctrl/mytonctrl.py b/mytonctrl/mytonctrl.py
index 6628a5a9..4a8c0f92 100755
--- a/mytonctrl/mytonctrl.py
+++ b/mytonctrl/mytonctrl.py
@@ -176,20 +176,38 @@ def inject_globals(func):
 	local.db.config.logLevel = "debug" if console.debug else "info"
 	local.db.config.isLocaldbSaving = False
 	local.run()
+
+
+def check_installer_user():
+	args = ["whoami"]
+	process = subprocess.run(args, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, timeout=3)
+	username = process.stdout.decode("utf-8").strip()
+
+	args = ["ls", "-lh", "/var/ton-work/keys/"]
+	process = subprocess.run(args, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, timeout=3)
+	output = process.stdout.decode("utf-8")
+	actual_user = output.split('\n')[1].split()[2]
+
+	if username != actual_user:
+		raise Exception(f'mytonctrl was installed by another user. Probably you need to launch mtc with `{actual_user}` user.')
 #end define
 
+
 def PreUp(local, ton):
 	CheckMytonctrlUpdate(local)
+	check_installer_user()
 	check_vport(local, ton)
 	# CheckTonUpdate()
 #end define
 
+
 def Installer(args):
 	# args = ["python3", "/usr/src/mytonctrl/mytoninstaller.py"]
 	args = ["python3", "-m", "mytoninstaller"]
 	subprocess.run(args)
 #end define
 
+
 def GetAuthorRepoBranchFromArgs(args):
 	data = dict()
 	arg1 = GetItemFromList(args, 0)
@@ -210,6 +228,7 @@ def GetAuthorRepoBranchFromArgs(args):
 	return data
 #end define
 
+
 def check_vport(local, ton):
 	try:
 		vconfig = ton.GetValidatorConfig()
@@ -245,7 +264,8 @@ def check_git(input_args, default_repo, text):
 	git_path = f"{src_dir}/{default_repo}"
 	fix_git_config(git_path)
 	default_author = "ton-blockchain"
-	default_branch = "master"
+	# default_branch = "master"
+	default_branch = "mytonctrl2"
 
 	# Get author, repo, branch
 	local_author, local_repo = get_git_author_and_repo(git_path)