diff --git a/Makefile.osx b/Makefile.osx
index f2469bc66..c6b03c657 100644
--- a/Makefile.osx
+++ b/Makefile.osx
@@ -92,8 +92,8 @@ VER_OPTS := -DCONFIG_HAPROXY_VERSION=\"$(VERSION)$(SUBVERS)\" \
 COPTS   = -Iinclude $(ADDINC) $(CPU_OPTS) $(TARGET_OPTS) $(REGEX_OPTS) \
           $(SMALL_OPTS) $(VER_OPTS) $(DEFINE)
 LIBS    = $(LIBS.$(TARGET)) $(LIBS.$(REGEX)) $(ADDLIB)
-CFLAGS  = -Wall $(COPTS) $(DEBUG) -isysroot /Developer/SDKs/MacOSX10.4u.sdk -arch ppc -arch i386
-LDFLAGS = -g -isysroot /Developer/SDKs/MacOSX10.4u.sdk -arch ppc -arch i386
+CFLAGS  = -Wall $(COPTS) $(DEBUG) -isysroot /Developer/SDKs/MacOSX10.4u.sdk -arch ppc -arch i386 -mmacosx-version-min=10.4
+LDFLAGS = -g -isysroot /Developer/SDKs/MacOSX10.4u.sdk -arch ppc -arch i386 -mmacosx-version-min=10.4
 
 OBJS = src/haproxy.o src/sessionhash.o src/base64.o src/protocols.o \
        src/uri_auth.o src/standard.o src/buffers.o src/log.o src/task.o \