diff --git a/Applications/Ice/Associator/Cube.FileSystem.SevenZip.Ice.Associator.csproj b/Applications/Ice/Associator/Cube.FileSystem.SevenZip.Ice.Associator.csproj
index d875a312..f8ec5d25 100644
--- a/Applications/Ice/Associator/Cube.FileSystem.SevenZip.Ice.Associator.csproj
+++ b/Applications/Ice/Associator/Cube.FileSystem.SevenZip.Ice.Associator.csproj
@@ -15,6 +15,7 @@
         <LangVersion>latest</LangVersion>
         <IsPackable>false</IsPackable>
         <Optimize>true</Optimize>
+        <DisableImplicitNamespaceImports>true</DisableImplicitNamespaceImports>
         <EnableDefaultNoneItems>false</EnableDefaultNoneItems>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <DefineConstants Condition=" '$(Configuration)' == 'Debug' ">DEBUG;TRACE</DefineConstants>
diff --git a/Applications/Ice/Core/Cube.FileSystem.SevenZip.Ice.csproj b/Applications/Ice/Core/Cube.FileSystem.SevenZip.Ice.csproj
index c5f74b5e..2844433f 100644
--- a/Applications/Ice/Core/Cube.FileSystem.SevenZip.Ice.csproj
+++ b/Applications/Ice/Core/Cube.FileSystem.SevenZip.Ice.csproj
@@ -8,6 +8,7 @@
         <TargetFramework>net47</TargetFramework>
         <LangVersion>latest</LangVersion>
         <Optimize>true</Optimize>
+        <DisableImplicitNamespaceImports>true</DisableImplicitNamespaceImports>
         <EnableDefaultNoneItems>false</EnableDefaultNoneItems>
         <DefineConstants Condition=" '$(Configuration)' == 'Debug' ">DEBUG;TRACE</DefineConstants>
         <SignAssembly>true</SignAssembly>
diff --git a/Applications/Ice/Main/Cube.FileSystem.SevenZip.Ice.Main.csproj b/Applications/Ice/Main/Cube.FileSystem.SevenZip.Ice.Main.csproj
index 12545610..f01afcd5 100644
--- a/Applications/Ice/Main/Cube.FileSystem.SevenZip.Ice.Main.csproj
+++ b/Applications/Ice/Main/Cube.FileSystem.SevenZip.Ice.Main.csproj
@@ -17,6 +17,7 @@
         <RuntimeIdentifiers>win7-x86;win7-x64</RuntimeIdentifiers>
         <IsPackable>false</IsPackable>
         <Optimize>true</Optimize>
+        <DisableImplicitNamespaceImports>true</DisableImplicitNamespaceImports>
         <EnableDefaultNoneItems>false</EnableDefaultNoneItems>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <DefineConstants Condition=" '$(Configuration)' == 'Debug' ">DEBUG;TRACE</DefineConstants>
diff --git a/Applications/Ice/Settings/Cube.FileSystem.SevenZip.Ice.Settings.csproj b/Applications/Ice/Settings/Cube.FileSystem.SevenZip.Ice.Settings.csproj
index b0bdc14b..8106d070 100644
--- a/Applications/Ice/Settings/Cube.FileSystem.SevenZip.Ice.Settings.csproj
+++ b/Applications/Ice/Settings/Cube.FileSystem.SevenZip.Ice.Settings.csproj
@@ -16,6 +16,7 @@
         <RuntimeIdentifiers>win7-x86;win7-x64</RuntimeIdentifiers>
         <IsPackable>false</IsPackable>
         <Optimize>true</Optimize>
+        <DisableImplicitNamespaceImports>true</DisableImplicitNamespaceImports>
         <EnableDefaultNoneItems>false</EnableDefaultNoneItems>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <DefineConstants Condition=" '$(Configuration)' == 'Debug' ">DEBUG;TRACE</DefineConstants>
diff --git a/Libraries/Core/Cube.FileSystem.SevenZip.csproj b/Libraries/Core/Cube.FileSystem.SevenZip.csproj
index 505e4cff..6ea21fd8 100644
--- a/Libraries/Core/Cube.FileSystem.SevenZip.csproj
+++ b/Libraries/Core/Cube.FileSystem.SevenZip.csproj
@@ -12,6 +12,7 @@
         <TargetFramework>net47</TargetFramework>
         <LangVersion>latest</LangVersion>
         <Optimize>true</Optimize>
+        <DisableImplicitNamespaceImports>true</DisableImplicitNamespaceImports>
         <EnableDefaultNoneItems>false</EnableDefaultNoneItems>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <DefineConstants Condition=" '$(Configuration)' == 'Debug' ">DEBUG;TRACE</DefineConstants>
diff --git a/Tests/Core/Cube.FileSystem.SevenZip.Tests.csproj b/Tests/Core/Cube.FileSystem.SevenZip.Tests.csproj
index cf7f3361..324f1a9d 100644
--- a/Tests/Core/Cube.FileSystem.SevenZip.Tests.csproj
+++ b/Tests/Core/Cube.FileSystem.SevenZip.Tests.csproj
@@ -10,6 +10,7 @@
         <RuntimeIdentifiers>win7-x86;win7-x64</RuntimeIdentifiers>
         <LangVersion>latest</LangVersion>
         <IsPackable>false</IsPackable>
+        <DisableImplicitNamespaceImports>true</DisableImplicitNamespaceImports>
         <EnableDefaultNoneItems>false</EnableDefaultNoneItems>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <DefineConstants Condition=" '$(Configuration)' == 'Debug' ">DEBUG;TRACE</DefineConstants>
diff --git a/Tests/Ice/Cube.FileSystem.SevenZip.Ice.Tests.csproj b/Tests/Ice/Cube.FileSystem.SevenZip.Ice.Tests.csproj
index f6d9ca0b..9a6e25d9 100644
--- a/Tests/Ice/Cube.FileSystem.SevenZip.Ice.Tests.csproj
+++ b/Tests/Ice/Cube.FileSystem.SevenZip.Ice.Tests.csproj
@@ -10,6 +10,7 @@
         <UseWindowsForms>true</UseWindowsForms>
         <LangVersion>latest</LangVersion>
         <IsPackable>false</IsPackable>
+        <DisableImplicitNamespaceImports>true</DisableImplicitNamespaceImports>
         <EnableDefaultNoneItems>false</EnableDefaultNoneItems>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <DefineConstants Condition=" '$(Configuration)' == 'Debug' ">DEBUG;TRACE</DefineConstants>