diff --git a/autogen.sh b/autogen.sh
index ed07953e..8c2d7fa2 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -14,7 +14,7 @@
 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
-if [ "$LIBTOOLIZE" == "" ] && [ "`uname`" == "Darwin" ]; then
+if [ "$LIBTOOLIZE" = "" ] && [ "`uname`" = "Darwin" ]; then
   LIBTOOLIZE=glibtoolize
 fi