diff --git a/tools/install/win/lazarus-cross.iss b/tools/install/win/lazarus-cross.iss
index e69266af58..837173429e 100644
--- a/tools/install/win/lazarus-cross.iss
+++ b/tools/install/win/lazarus-cross.iss
@@ -36,6 +36,7 @@ AppUpdatesURL=http://www.lazarus.freepascal.org/
 ArchitecturesInstallIn64BitMode=x64
 DefaultDirName={code:GetDefDir|{sd}\lazarus}
 DefaultGroupName={#AppName}
+AppendDefaultDirName=no
 OutputBaseFilename={#OutputFileName}
 InternalCompressLevel=ultra
 ;InternalCompressLevel=ultra64
diff --git a/tools/install/win/lazarus.iss b/tools/install/win/lazarus.iss
index 19e59193b2..a59b74e5e6 100644
--- a/tools/install/win/lazarus.iss
+++ b/tools/install/win/lazarus.iss
@@ -37,6 +37,7 @@ AppUpdatesURL=http://www.lazarus.freepascal.org/
 ArchitecturesInstallIn64BitMode=x64
 DefaultDirName={code:GetDefDir|{sd}\lazarus}
 DefaultGroupName={#AppName}
+AppendDefaultDirName=no
 DirExistsWarning=no
 OutputBaseFilename={#OutputFileName}
 InternalCompressLevel=ultra