diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/IndexerPreferences.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/IndexerPreferences.java
index c4fdd501acf..60fa3a0122c 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/IndexerPreferences.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/IndexerPreferences.java
@@ -59,16 +59,18 @@ public class IndexerPreferences {
 	private static final String KEY_INDEX_IMPORT_LOCATION = "indexImportLocation"; //$NON-NLS-1$
 	
 	private static final String DEFAULT_INDEX_IMPORT_LOCATION = ".settings/cdt-index.zip"; //$NON-NLS-1$
-	// See https://bugs.eclipse.org/bugs/show_bug.cgi?id=259843 
-	// and https://bugs.eclipse.org/bugs/show_bug.cgi?id=294180 for the rationale.
+	// See http://bugs.eclipse.org/bugs/show_bug.cgi?id=259843, 
+	//     http://bugs.eclipse.org/bugs/show_bug.cgi?id=294180 and
+	//     http://bugs.eclipse.org/bugs/show_bug.cgi?id=295518 for the rationale.
 	private static final String DEFAULT_FILES_TO_PARSE_UP_FRONT=
-		"cstdarg, " +          // configures stdarg.h for c++ 							//$NON-NLS-1$
-		"stdarg.h, " +         // can be fragmented										//$NON-NLS-1$
-		"stddef.h, " +         // can be fragmented										//$NON-NLS-1$
-		"sys/resource.h, " +   // configures bits/time.h, !! fragments stddef.h !!		//$NON-NLS-1$
-		"ctime, " +            // configures time.h for c++								//$NON-NLS-1$
-		"sys/types.h, " +      // can be fragmented,      !! fragments bits/time.h !!	//$NON-NLS-1$
-		"cstdio";              // configures stdio.h for c++							//$NON-NLS-1$
+		"cstdarg, " +          // configures stdarg.h for c++ 								//$NON-NLS-1$
+		"stdarg.h, " +         // can be fragmented											//$NON-NLS-1$
+		"stddef.h, " +         // can be fragmented											//$NON-NLS-1$
+		"sys/resource.h, " +   // configures bits/time.h, !! fragments stddef.h !!			//$NON-NLS-1$
+		"ctime, " +            // configures time.h for c++									//$NON-NLS-1$
+		"sys/types.h, " +      // can be fragmented,      !! fragments bits/time.h !!		//$NON-NLS-1$
+		"signal.h, " +         // configures bits/signum.h									//$NON-NLS-1$
+		"cstdio";              // configures stdio.h for c++ !! fragments bits/signum.h !!	//$NON-NLS-1$
 	private static final int DEFAULT_UPDATE_POLICY= 0; 
 
 	private static final String QUALIFIER = CCorePlugin.PLUGIN_ID;