diff --git a/stepmania/stepmania.nsi b/stepmania/stepmania.nsi
index a87d0b4c64..c7570ca383 100644
--- a/stepmania/stepmania.nsi
+++ b/stepmania/stepmania.nsi
@@ -186,7 +186,7 @@ File "SDL_image.dll"
 ; File "SDL_net.dll"
 
 File "COPYING.txt"
-File "README-FIRST.htm"
+File "README-FIRST.html"
 File "NEWS"
 File "stepmania.exe"
 File "stepmania.vdi"
@@ -215,7 +215,7 @@ CreateShortCut "$DESKTOP\Play ${PRODUCT_NAME_VER}.lnk" "$INSTDIR\stepmania.exe"
 CreateShortCut "$SMPROGRAMS\${PRODUCT_ID}\${PRODUCT_NAME_VER}.lnk" "$INSTDIR\stepmania.exe"
 CreateShortCut "$SMPROGRAMS\${PRODUCT_ID}\Open Songs Folder.lnk" "$WINDIR\explorer.exe" "$INSTDIR\Songs\"
 CreateShortCut "$SMPROGRAMS\${PRODUCT_ID}\SMZIP Package Exporter.lnk" "$INSTDIR\smpackage.exe"
-CreateShortCut "$SMPROGRAMS\${PRODUCT_ID}\README-FIRST.lnk" "$INSTDIR\README-FIRST.htm"
+CreateShortCut "$SMPROGRAMS\${PRODUCT_ID}\README-FIRST.lnk" "$INSTDIR\README-FIRST.html"
 CreateShortCut "$SMPROGRAMS\${PRODUCT_ID}\Uninstall ${PRODUCT_NAME_VER}.lnk" "$INSTDIR\uninst.exe"
 CreateShortCut "$SMPROGRAMS\${PRODUCT_ID}\Go To StepMania web site.lnk" "http://www.stepmania.com"
 
@@ -298,7 +298,7 @@ Delete "$INSTDIR\zliba.dll"
 Delete "$INSTDIR\SDL.dll"
 Delete "$INSTDIR\SDL_image.dll"
 Delete "$INSTDIR\COPYING.txt"
-Delete "$INSTDIR\README-FIRST.htm"
+Delete "$INSTDIR\README-FIRST.html"
 Delete "$INSTDIR\NEWS"
 Delete "$INSTDIR\stepmania.exe"
 Delete "$INSTDIR\stepmania.ini"