diff --git a/CMakeLists.txt b/CMakeLists.txt
index 73dffb02..74d9b553 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -301,20 +301,21 @@ add_test(jpegtran-static-crop-cmp ${CMAKE_COMMAND} -E compare_files ${CMAKE_SOUR
 # Installer
 #
 
-set(INST_NAME ${CMAKE_PROJECT_NAME}-${VERSION})
-
 if(MSVC)
   set(INST_PLATFORM "Visual C++")
-  set(INST_NAME ${INST_NAME}-vc)
+  set(INST_NAME ${CMAKE_PROJECT_NAME}-${VERSION}-vc)
+  set(INST_DIR ${CMAKE_PROJECT_NAME})
 elseif(MINGW)
   set(INST_PLATFORM GCC)
-  set(INST_NAME ${INST_NAME}-gcc)
+  set(INST_NAME ${CMAKE_PROJECT_NAME}-${VERSION}-gcc)
+  set(INST_DIR ${CMAKE_PROJECT_NAME}-gcc)
   set(INST_DEFS -DGCC)
 endif()
 
 if(64BIT)
   set(INST_PLATFORM "${INST_PLATFORM} 64-bit")
   set(INST_NAME ${INST_NAME}64)
+  set(INST_DIR ${INST_DIR}64)
   set(INST_DEFS ${INST_DEFS} -DWIN64)
 endif()
 
diff --git a/release/libjpeg-turbo.nsi.in b/release/libjpeg-turbo.nsi.in
index de711537..73e0e003 100755
--- a/release/libjpeg-turbo.nsi.in
+++ b/release/libjpeg-turbo.nsi.in
@@ -1,7 +1,7 @@
 !include x64.nsh
 Name "@CMAKE_PROJECT_NAME@ SDK for @INST_PLATFORM@"
 OutFile "@CMAKE_BINARY_DIR@\${BUILDDIR}@INST_NAME@.exe"
-InstallDir c:\@INST_NAME@
+InstallDir c:\@INST_DIR@
 
 SetCompressor bzip2
 
@@ -77,12 +77,12 @@ Section "@CMAKE_PROJECT_NAME@ SDK for @INST_PLATFORM@ (required)"
 	File "@CMAKE_SOURCE_DIR@\LICENSE.txt"
 	File "@CMAKE_SOURCE_DIR@\usage.txt"
 
-	WriteRegStr HKLM "SOFTWARE\@INST_NAME@ @VERSION@" "Install_Dir" "$INSTDIR"
+	WriteRegStr HKLM "SOFTWARE\@INST_DIR@ @VERSION@" "Install_Dir" "$INSTDIR"
 
-	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\@INST_NAME@ @VERSION@" "DisplayName" "@CMAKE_PROJECT_NAME@ SDK v@VERSION@ for @INST_PLATFORM@"
-	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\@INST_NAME@ @VERSION@" "UninstallString" '"$INSTDIR\uninstall_@VERSION@.exe"'
-	WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\@INST_NAME@ @VERSION@" "NoModify" 1
-	WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\@INST_NAME@ @VERSION@" "NoRepair" 1
+	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\@INST_DIR@ @VERSION@" "DisplayName" "@CMAKE_PROJECT_NAME@ SDK v@VERSION@ for @INST_PLATFORM@"
+	WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\@INST_DIR@ @VERSION@" "UninstallString" '"$INSTDIR\uninstall_@VERSION@.exe"'
+	WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\@INST_DIR@ @VERSION@" "NoModify" 1
+	WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\@INST_DIR@ @VERSION@" "NoRepair" 1
 	WriteUninstaller "uninstall_@VERSION@.exe"
 SectionEnd
 
@@ -95,8 +95,8 @@ Section "Uninstall"
 
 	SetShellVarContext all
 
-	DeleteRegKey HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\@INST_NAME@ @VERSION@"
-	DeleteRegKey HKLM "SOFTWARE\@INST_NAME@ @VERSION@"
+	DeleteRegKey HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\@INST_DIR@ @VERSION@"
+	DeleteRegKey HKLM "SOFTWARE\@INST_DIR@ @VERSION@"
 
 !ifdef GCC
 	Delete $INSTDIR\bin\libjpeg-@DLL_VERSION@.dll