diff --git a/Makefile b/Makefile
index 38dc8d2..e280a81 100644
--- a/Makefile
+++ b/Makefile
@@ -22,7 +22,7 @@ distclean: clean
 	echo -e '<?php\nheader("Location: ./../index.php");\n?>' > ca/index.php
 
 	echo '<?php' > config.php
-	echo 'define(PHPKI_VERSION, "$(VERSION)");' >> config.php
+	echo 'define("PHPKI_VERSION", "$(VERSION)");' >> config.php
 	echo '?>' >> config.php
 
 	rm -f index.php setup.php
diff --git a/config.php b/config.php
index 188ac19..e89a276 100644
--- a/config.php
+++ b/config.php
@@ -1,3 +1,3 @@
 <?php
-define(PHPKI_VERSION, "0.83");
+define("PHPKI_VERSION", "0.83");
 ?>