diff --git a/libiio.iss.cmakein b/libiio.iss.cmakein
index 96bb3f078..8ad442852 100644
--- a/libiio.iss.cmakein
+++ b/libiio.iss.cmakein
@@ -44,11 +44,11 @@ Name: "turkish"; MessagesFile: "compiler:Languages\Turkish.isl"
 Name: "ukrainian"; MessagesFile: "compiler:Languages\Ukrainian.isl"
 
 [Files]
-Source: "C:\projects\libiio\build-win32\Release\libiio.dll"; DestDir: "{sys}"; Flags: 32bit ignoreversion
-Source: "C:\projects\libiio\build-win64\Release\libiio.dll"; DestDir: "{sys}"; Check: Is64BitInstallMode; Flags: ignoreversion
+Source: "C:\projects\libiio\build-win32\Release\libiio.dll"; DestDir: "{sys}"; Flags: 32bit replacesameversion
+Source: "C:\projects\libiio\build-win64\Release\libiio.dll"; DestDir: "{sys}"; Check: Is64BitInstallMode; Flags: replacesameversion
 
-Source: "C:\projects\libiio\build-win32\tests\Release\*.exe"; DestDir: "{sys}"; Check: not Is64BitInstallMode; Flags: ignoreversion
-Source: "C:\projects\libiio\build-win64\tests\Release\*.exe"; DestDir: "{sys}"; Check: Is64BitInstallMode; Flags: ignoreversion
+Source: "C:\projects\libiio\build-win32\tests\Release\*.exe"; DestDir: "{sys}"; Check: not Is64BitInstallMode; Flags: replacesameversion
+Source: "C:\projects\libiio\build-win64\tests\Release\*.exe"; DestDir: "{sys}"; Check: Is64BitInstallMode; Flags: replacesameversion
 
 Source: "C:\projects\libiio\build-win32\Release\libiio.lib"; DestDir: "{pf32}\Microsoft Visual Studio 12.0\VC\lib"; Check: not Is64BitInstallMode
 Source: "C:\projects\libiio\build-win64\Release\libiio.lib"; DestDir: "{pf32}\Microsoft Visual Studio 12.0\VC\lib\amd64"; Check: Is64BitInstallMode
@@ -63,7 +63,7 @@ Source: "C:\libs\64\libusb-1.0.dll"; DestDir: "{sys}"; Check: Is64BitInstallMode
 Source: "C:\libs\32\libserialport-0.dll"; DestDir: "{sys}"; Flags: onlyifdoesntexist 32bit
 Source: "C:\libs\64\libserialport-0.dll"; DestDir: "{sys}"; Check: Is64BitInstallMode; Flags: onlyifdoesntexist
 
-Source: "C:\projects\libiio\build-win32\bindings\csharp\libiio-sharp.dll"; DestDir: "{cf}\libiio"; Flags: ignoreversion
+Source: "C:\projects\libiio\build-win32\bindings\csharp\libiio-sharp.dll"; DestDir: "{cf}\libiio"; Flags: replacesameversion
 
 Source: "C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\redist\x86\Microsoft.VC120.CRT\msvcr120.dll"; DestDir: "{sys}"; Flags: onlyifdoesntexist 32bit
 Source: "C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\redist\x64\Microsoft.VC120.CRT\msvcr120.dll"; DestDir: "{sys}"; Check: Is64BitInstallMode; Flags: onlyifdoesntexist