diff --git a/org.eventb.texttools/src/org/eventb/texttools/prettyprint/MachinePrintSwitch.java b/org.eventb.texttools/src/org/eventb/texttools/prettyprint/MachinePrintSwitch.java
index bf54a6043588b333117a2e11c79096bf60e87ce5..ff6b2741d4dedbc19360269ae4414b2436dcec10 100644
--- a/org.eventb.texttools/src/org/eventb/texttools/prettyprint/MachinePrintSwitch.java
+++ b/org.eventb.texttools/src/org/eventb/texttools/prettyprint/MachinePrintSwitch.java
@@ -251,7 +251,7 @@ public class MachinePrintSwitch extends MachineSwitch<Boolean> implements
 				printer.appendLineBreak();
 			}
 
-			printer.appendWithLineBreak(VARIANT);
+			printer.appendWithSpace(VARIANT);
 			printer.increaseIndentLevel();
 
 			for (final Variant variant : variants) {