Makefile.in |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile.in b/Makefile.in
index 956887d..4af7a06 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -91,8 +91,8 @@ lib_LTLIBRARIES = libtcl-mccp.la
 libtcl_mccp_la_SOURCES = MCCP.c mccpDecompress.c
 lib_DATA = pkgIndex.tcl
 
-CFLAGS := -Wall -I $(TCL_PREFIX)/include -lz
-LIBS := $(TCL_STUB_LIB_SPEC) 
+CFLAGS += -Wall -I $(TCL_PREFIX)/include
+LIBS += $(TCL_STUB_LIB_SPEC) -lz
 
 # FIXME: is this the right way to mofify libdir?
 libdir = @libdir@/tcl-mccp