diff --git a/Development/Scripts/Linux/CallBuildTool.sh b/Development/Scripts/Linux/CallBuildTool.sh
index 3b4568918..1a8affe20 100755
--- a/Development/Scripts/Linux/CallBuildTool.sh
+++ b/Development/Scripts/Linux/CallBuildTool.sh
@@ -3,6 +3,12 @@
 
 set -e
 
+testfilesize=$(wc -c < 'Source/Logo.png')
+if [ $testfilesize -le 1000 ]; then
+    echo "CallBuildTool ERROR: Repository was not cloned using Git LFS" 1>&2
+	exit 1
+fi
+
 # Compile the build tool.
 xbuild /nologo /verbosity:quiet "Source/Tools/Flax.Build/Flax.Build.csproj" /property:Configuration=Release /property:Platform=AnyCPU /target:Build
 
diff --git a/Development/Scripts/Windows/CallBuildTool.bat b/Development/Scripts/Windows/CallBuildTool.bat
index 4d9124776..c9729cf55 100644
--- a/Development/Scripts/Windows/CallBuildTool.bat
+++ b/Development/Scripts/Windows/CallBuildTool.bat
@@ -4,6 +4,10 @@ rem Copyright (c) 2012-2020 Wojciech Figat. All rights reserved.
 
 if not exist "Development\Scripts\Windows\GetMSBuildPath.bat" goto Error_InvalidLocation
 
+for %%I in (Source\Logo.png) do if %%~zI LSS 2000 (
+	goto Error_MissingLFS
+)
+
 call "Development\Scripts\Windows\GetMSBuildPath.bat"
 if errorlevel 1 goto Error_NoVisualStudioEnvironment
 
@@ -33,6 +37,9 @@ Binaries\Tools\Flax.Build.exe %*
 if errorlevel 1 goto Error_FlaxBuildFailed
 exit /B 0
 
+:Error_MissingLFS
+echo CallBuildTool ERROR: Repository was not cloned using Git LFS
+goto Exit
 :Error_InvalidLocation
 echo CallBuildTool ERROR: The script is in invalid directory.
 goto Exit