diff --git a/ltk/org.eclipse.statet.ltk.core/src/org/eclipse/statet/ltk/model/core/build/SourceUnitModelContainer.java b/ltk/org.eclipse.statet.ltk.core/src/org/eclipse/statet/ltk/model/core/build/SourceUnitModelContainer.java
index 6dd6185..519ab67 100644
--- a/ltk/org.eclipse.statet.ltk.core/src/org/eclipse/statet/ltk/model/core/build/SourceUnitModelContainer.java
+++ b/ltk/org.eclipse.statet.ltk.core/src/org/eclipse/statet/ltk/model/core/build/SourceUnitModelContainer.java
@@ -14,6 +14,8 @@
 
 package org.eclipse.statet.ltk.model.core.build;
 
+import java.util.concurrent.CancellationException;
+
 import org.eclipse.core.runtime.IProgressMonitor;
 
 import org.eclipse.statet.jcommons.lang.NonNullByDefault;
@@ -76,7 +78,10 @@
 	
 	public @Nullable AstInfo getAstInfo(final boolean ensureSync, final IProgressMonitor monitor) {
 		if (ensureSync) {
-			getModelManager().reconcile(this, ModelManager.AST, monitor);
+			try {
+				getModelManager().reconcile(this, ModelManager.AST, monitor);
+			}
+			catch (final CancellationException e) {}
 		}
 		return this.astInfo;
 	}
@@ -91,7 +96,10 @@
 					|| currentModel == null
 					|| currentModel.getStamp().getContentStamp() == 0
 					|| currentModel.getStamp().getContentStamp() != this.unit.getContentStamp(monitor) ) {
-				getModelManager().reconcile(this, syncLevel, monitor);
+				try {
+					getModelManager().reconcile(this, syncLevel, monitor);
+				}
+				catch (final CancellationException e) {}
 			}
 		}
 		return this.modelInfo;