diff --git a/swing/src/net/sf/openrocket/gui/dialogs/AboutDialog.java b/swing/src/net/sf/openrocket/gui/dialogs/AboutDialog.java
index 1371bf645..b81869135 100644
--- a/swing/src/net/sf/openrocket/gui/dialogs/AboutDialog.java
+++ b/swing/src/net/sf/openrocket/gui/dialogs/AboutDialog.java
@@ -68,7 +68,7 @@ public class AboutDialog extends JDialog {
 		"JOGL " + href("http://jogamp.org/jogl/www", true) + "<br>" +
 		"Guava " + href("https://github.com/google/guava", true) + "<br>" +
 		"Opencsv " + href("http://opencsv.sourceforge.net", true) + "<br>" +
-		"Simple Logging Facade for Java " + href("http://www.slf4j.org/", true) + "<br>" +
+		"Simple Logging Facade for Java " + href("http://www.slf4j.org", true) + "<br>" +
 		"Java library for parsing and rendering CommonMark " + href("https://github.com/commonmark/commonmark-java", true) + "<br>" +
 		"<br>" +
 		"<b>OpenRocket gratefully acknowledges our use of the following databases:</b><br>" +