diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/SemanticHighlightingReconciler.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/SemanticHighlightingReconciler.java
index 096d1491a55..971b435349b 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/SemanticHighlightingReconciler.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/SemanticHighlightingReconciler.java
@@ -527,7 +527,7 @@ public class SemanticHighlightingReconciler implements ICReconcilingListener {
 					}
 				};
 //				fJob.setSystem(true);
-				fJob.setPriority(Job.DECORATE);
+				fJob.setPriority(Job.SHORT);
 				fJob.schedule();
 			}
 		}
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/text/CReconcilingStrategy.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/text/CReconcilingStrategy.java
index cdf3edb1b8b..79a32395060 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/text/CReconcilingStrategy.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/text/CReconcilingStrategy.java
@@ -114,6 +114,7 @@ public class CReconcilingStrategy implements IReconcilingStrategy, IReconcilingS
 					if (index != null) {
 						index.releaseReadLock();
 					}
+					fProgressMonitor.setCanceled(false);
 				}
 			}
 		}