diff --git a/configure.in b/configure.in
index bf4b516c..df240e4a 100644
--- a/configure.in
+++ b/configure.in
@@ -66,7 +66,7 @@ AC_ARG_WITH(efence, [  --with-efence           Specify if we are building with "
 
 if test "x$with_efence" = "xyes" ; then
     echo "Building with efence"
-    LIBS= "$LIBS -lefence"
+    LIBS="$LIBS -lefence"
 fi
 
 dnl Check for MS Windows environment