diff --git a/code/client/snd_openal.c b/code/client/snd_openal.c
index dc1d817d..5ba5c7c6 100644
--- a/code/client/snd_openal.c
+++ b/code/client/snd_openal.c
@@ -2206,7 +2206,9 @@ static ALCdevice *alCaptureDevice;
 static cvar_t *s_alCapture;
 #endif
 
-#ifdef _WIN32
+#if defined(_WIN64)
+#define ALDRIVER_DEFAULT "OpenAL64.dll"
+#elif defined(_WIN32)
 #define ALDRIVER_DEFAULT "OpenAL32.dll"
 #elif defined(__APPLE__)
 #define ALDRIVER_DEFAULT "/System/Library/Frameworks/OpenAL.framework/OpenAL"
diff --git a/misc/nsis/Makefile b/misc/nsis/Makefile
index d56fbdec..3875e4e5 100644
--- a/misc/nsis/Makefile
+++ b/misc/nsis/Makefile
@@ -38,6 +38,13 @@ ifndef SDLDLL
 		SDLDLL=SDL2.dll
 	endif
 endif
+ifndef OPENALDLL
+	ifeq ($(ARCH),x86_64)
+		OPENALDLL=OpenAL64.dll
+	else
+		OPENALDLL=OpenAL32.dll
+	endif
+endif
 
 DEFINES=
 ifeq ($(USE_RENDERER_DLOPEN),1)
@@ -63,7 +70,7 @@ endif
 all: ioquake3-$(VERSION)-$(RELEASE).$(ARCH).exe
 
 ioquake3.$(ARCH).nsi: ioquake3.nsi.in
-	sed 's/XXXVERSIONXXX/$(VERSION)/;s/XXXRELEASEXXX/$(RELEASE)/;s/mingw32/$(PLATFORM)/g;s/x86/$(ARCH)/g;s/SDL2.dll/$(SDLDLL)/g' < $< > $@
+	sed 's/XXXVERSIONXXX/$(VERSION)/;s/XXXRELEASEXXX/$(RELEASE)/;s/mingw32/$(PLATFORM)/g;s/x86/$(ARCH)/g;s/SDL2.dll/$(SDLDLL)/g;s/OpenAL32.dll/$(OPENALDLL)/g' < $< > $@
 
 ioquake3-$(VERSION)-$(RELEASE).$(ARCH).exe: ioquake3.$(ARCH).nsi
 	makensis $(DEFINES) ioquake3.$(ARCH).nsi