diff --git a/gui/dialogs/marker-adjust.xml b/gui/dialogs/marker-adjust.xml
index f07c071d4..015890a5d 100644
--- a/gui/dialogs/marker-adjust.xml
+++ b/gui/dialogs/marker-adjust.xml
@@ -110,7 +110,7 @@
 			var dump = func {
 				print("<marker>");
 				foreach (var v; values) {
-					print(sprintf("    <%s>%.3f</%s>", v.name, v.valueN.getValue(), v.name));
+					print(sprintf("    <%s>%.4f</%s>", v.name, v.valueN.getValue(), v.name));
 				}
 				print("</marker>");
 			}