diff --git a/Quake/Makefile.darwin b/Quake/Makefile.darwin
index ae3ab31e..c71d10c0 100644
--- a/Quake/Makefile.darwin
+++ b/Quake/Makefile.darwin
@@ -48,14 +48,16 @@ LDFLAGS =
 DFLAGS ?=
 CFLAGS ?= -Wall
 # require 10.5 for 64 bit builds
-ifeq ($(MACH_TYPE),x86_64)
-CFLAGS  +=-mmacosx-version-min=10.5
-LDFLAGS +=-mmacosx-version-min=10.5
-endif
 ifeq ($(MACH_TYPE),ppc64)
 CFLAGS  +=-mmacosx-version-min=10.5
 LDFLAGS +=-mmacosx-version-min=10.5
 endif
+ifeq ($(MACH_TYPE),x86_64)
+# require 10.6 for amd64 builds, not 10.5 (SDL's requirement.)
+# bundle1.o is needed for dyld_stub_binding_helper
+CFLAGS  +=-mmacosx-version-min=10.6
+LDFLAGS +=-mmacosx-version-min=10.6 -Wl,-lbundle1.o
+endif
 CFLAGS += $(CPUFLAGS)
 
 ifneq ($(DEBUG),0)