diff --git a/configure.ac b/configure.ac
index 1c22072..b6b2256 100644
--- a/configure.ac
+++ b/configure.ac
@@ -36,7 +36,7 @@ AC_MSG_RESULT([$xtlibdir])
 regular_CFLAGS="-D_LARGEFILE_SOURCE=1 -D_LARGE_FILES -D_FILE_OFFSET_BITS=64 \
 	-D_REENTRANT -Wall -Waggregate-return -Wmissing-declarations \
 	-Wmissing-prototypes -Wredundant-decls -Wshadow -Wstrict-prototypes \
-	-Winline -pipe -DXTABLES_LIBDIR=\\\"\${xtlibdir}\\\" \
+	-Winline -pipe \
 	-I\${XA_TOPSRCDIR}/include";
 
 #