diff --git a/cli/cli.vcxproj b/cli/cli.vcxproj
index e49183273..3182754d3 100644
--- a/cli/cli.vcxproj
+++ b/cli/cli.vcxproj
@@ -113,7 +113,7 @@
       <BufferSecurityCheck>true</BufferSecurityCheck>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>CPPCHECKLIB_IMPORT;UNICODE;WIN32;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>CPPCHECKLIB_IMPORT;UNICODE;WIN32;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;_WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <PreprocessToFile>false</PreprocessToFile>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
       <SuppressStartupBanner>true</SuppressStartupBanner>
@@ -174,7 +174,7 @@
       <BrowseInformation>false</BrowseInformation>
       <BufferSecurityCheck>false</BufferSecurityCheck>
       <Optimization>MaxSpeed</Optimization>
-      <PreprocessorDefinitions>CPPCHECKLIB_IMPORT;NDEBUG;UNICODE;WIN32;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>CPPCHECKLIB_IMPORT;NDEBUG;UNICODE;WIN32;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;_WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <PreprocessToFile>false</PreprocessToFile>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <SuppressStartupBanner>true</SuppressStartupBanner>
diff --git a/lib/cppcheck.vcxproj b/lib/cppcheck.vcxproj
index bce923eca..af806ebd0 100644
--- a/lib/cppcheck.vcxproj
+++ b/lib/cppcheck.vcxproj
@@ -268,7 +268,7 @@
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <ObjectFileName>temp\</ObjectFileName>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>CPPCHECKLIB_EXPORT;UNICODE;WIN32;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>CPPCHECKLIB_EXPORT;UNICODE;WIN32;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;_WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <WarningLevel>Level4</WarningLevel>
       <AdditionalIncludeDirectories>..\externals;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <DisableSpecificWarnings>4251;4512</DisableSpecificWarnings>
@@ -291,7 +291,7 @@
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <ObjectFileName>temp\</ObjectFileName>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>CPPCHECKLIB_EXPORT;UNICODE;WIN32;HAVE_RULES;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>CPPCHECKLIB_EXPORT;UNICODE;WIN32;HAVE_RULES;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;_WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <WarningLevel>Level4</WarningLevel>
       <AdditionalIncludeDirectories>..\externals;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <DisableSpecificWarnings>4251;4512</DisableSpecificWarnings>
@@ -375,7 +375,7 @@
       <WholeProgramOptimization>false</WholeProgramOptimization>
       <AdditionalIncludeDirectories>..\externals;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <DisableSpecificWarnings>4251;4512</DisableSpecificWarnings>
-      <PreprocessorDefinitions>CPPCHECKLIB_EXPORT;NDEBUG;UNICODE;WIN32;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>CPPCHECKLIB_EXPORT;NDEBUG;UNICODE;WIN32;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;_WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <BufferSecurityCheck>false</BufferSecurityCheck>
       <DebugInformationFormat>
@@ -404,7 +404,7 @@
       <WholeProgramOptimization>false</WholeProgramOptimization>
       <AdditionalIncludeDirectories>..\externals;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <DisableSpecificWarnings>4251;4512</DisableSpecificWarnings>
-      <PreprocessorDefinitions>CPPCHECKLIB_EXPORT;NDEBUG;UNICODE;WIN32;HAVE_RULES;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>CPPCHECKLIB_EXPORT;NDEBUG;UNICODE;WIN32;HAVE_RULES;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;_WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <BufferSecurityCheck>false</BufferSecurityCheck>
       <DebugInformationFormat>
diff --git a/test/testrunner.vcxproj b/test/testrunner.vcxproj
index d07ce56f4..d9691dd3d 100644
--- a/test/testrunner.vcxproj
+++ b/test/testrunner.vcxproj
@@ -186,7 +186,7 @@
       <BufferSecurityCheck>true</BufferSecurityCheck>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>CPPCHECKLIB_IMPORT;UNICODE;WIN32;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>CPPCHECKLIB_IMPORT;UNICODE;WIN32;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;_WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <PreprocessToFile>false</PreprocessToFile>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
       <SuppressStartupBanner>true</SuppressStartupBanner>
@@ -246,7 +246,7 @@
       <BrowseInformation>false</BrowseInformation>
       <BufferSecurityCheck>false</BufferSecurityCheck>
       <Optimization>MaxSpeed</Optimization>
-      <PreprocessorDefinitions>CPPCHECKLIB_IMPORT;NDEBUG;UNICODE;WIN32;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>CPPCHECKLIB_IMPORT;NDEBUG;UNICODE;WIN32;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;_WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <PreprocessToFile>false</PreprocessToFile>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <SuppressStartupBanner>true</SuppressStartupBanner>