diff --git a/wacko/setup/install-database.php b/wacko/setup/install-database.php
index 156956a5b..cb3bfa593 100644
--- a/wacko/setup/install-database.php
+++ b/wacko/setup/install-database.php
@@ -268,7 +268,9 @@
 					else
 					{
 						// The funny upgrading stuff. Make sure these are in order!
-						ksort($upgrade, SORT_STRING);
+						uksort($upgrade, function($a, $b) {
+							return version_compare ($a, $b);
+						});
 
 						foreach (array_keys($upgrade) as $to_version) // index == value, BTW
 						{
@@ -452,7 +454,9 @@
 				else
 				{
 					// The funny upgrading stuff. Make sure these are in order!
-					ksort($upgrade, SORT_STRING);
+					uksort($upgrade, function($a, $b) {
+						return version_compare ($a, $b);
+					});
 
 					foreach (array_keys($upgrade) as $to_version) // index == value, BTW
 					{