diff -r 16457b922100 web.core.syntax/src/org/netbeans/modules/web/core/syntax/JspSyntaxSupport.java
--- a/web.core.syntax/src/org/netbeans/modules/web/core/syntax/JspSyntaxSupport.java	Mon Jul 11 18:04:10 2016 +0000
+++ b/web.core.syntax/src/org/netbeans/modules/web/core/syntax/JspSyntaxSupport.java	Thu Jul 14 12:35:43 2016 +1000
@@ -71,6 +71,7 @@
 import org.openide.filesystems.FileObject;
 import org.openide.filesystems.FileRenameEvent;
 import org.openide.loaders.DataObject;
+import org.openide.util.Utilities;
 import org.netbeans.modules.web.jsps.parserapi.JspParserAPI;
 import org.netbeans.modules.web.jsps.parserapi.PageInfo;
 import org.netbeans.editor.*;
@@ -778,7 +779,7 @@
             File f = InstalledFileLocator.getDefault().locate("docs/jstl11-doc.zip", "org.netbeans.modules.web.core.syntax", false); //NoI18N
             if (f != null){
                 try {
-                    URL urll = f.toURL();
+                    URL urll = Utilities.toURI(f).toURL();
                     urll = FileUtil.getArchiveRoot(urll);
                     url = urll.toString();
                 } catch (java.net.MalformedURLException e){
@@ -807,7 +808,7 @@
             f = InstalledFileLocator.getDefault().locate("docs/jsf12-tlddoc.zip", "org.netbeans.modules.web.core.syntax", false); //NoI18N
             if (f != null){
                 try {
-                    URL urll = f.toURL();
+                    URL urll = Utilities.toURI(f).toURL();
                     urll = FileUtil.getArchiveRoot(urll);
                     url = urll.toString();
                     helpMap.put("http://java.sun.com/jsf/html", url + "h/");
@@ -820,7 +821,7 @@
             f = InstalledFileLocator.getDefault().locate("docs/struts-tags.zip", "org.netbeans.modules.web.core.syntax", false);
             if (f != null){
                 try {
-                    URL urll = f.toURL();
+                    URL urll = Utilities.toURI(f).toURL();
                     urll = FileUtil.getArchiveRoot(urll);
                     url = urll.toString();
                     helpMap.put("http://jakarta.apache.org/struts/tags-bean", url + "bean/");
@@ -917,7 +918,7 @@
             File f = InstalledFileLocator.getDefault().locate(helpFiles, "org.netbeans.modules.web.core.syntax", true); //NoI18N
             if (f != null){
                 try {
-                    URL urll = f.toURL();
+                    URL urll = Utilities.toURI(f).toURL();
                     urll = FileUtil.getArchiveRoot(urll);
                     url = urll.toString();
                 } catch (java.net.MalformedURLException e){