diff --git a/autogen.sh b/autogen.sh
index bfd8f3e6..cf82cc63 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -17,7 +17,7 @@
 set -eu
 cd `dirname "$0"`
 
-if [ "${1:-dev}" == "release" ]; then
+if [ "${1:-dev}" = "release" ]; then
     export LIBUV_RELEASE=true
 else
     export LIBUV_RELEASE=false