diff --git a/forge-installer/src/main/java/io/izzel/arclight/forgeinstaller/ForgeInstaller.java b/forge-installer/src/main/java/io/izzel/arclight/forgeinstaller/ForgeInstaller.java
index c9197ee1..2726c2e9 100644
--- a/forge-installer/src/main/java/io/izzel/arclight/forgeinstaller/ForgeInstaller.java
+++ b/forge-installer/src/main/java/io/izzel/arclight/forgeinstaller/ForgeInstaller.java
@@ -28,6 +28,7 @@ import java.nio.file.FileSystems;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
 import java.security.AccessControlContext;
 import java.util.AbstractMap;
 import java.util.ArrayList;
@@ -233,7 +234,23 @@ public class ForgeInstaller {
         exports.add("cpw.mods.bootstraplauncher/cpw.mods.bootstraplauncher=ALL-UNNAMED");
         List<String> ignores = new ArrayList<>();
         List<String> merges = new ArrayList<>();
-        var self = new File(ForgeInstaller.class.getProtectionDomain().getCodeSource().getLocation().toURI()).getCanonicalPath();
+        var self = new File(ForgeInstaller.class.getProtectionDomain().getCodeSource().getLocation().toURI()).toPath();
+        // todo ugly McModLauncher/securejarhandler#19
+        if (self.getParent() != null && self.getParent().getParent() != null && self.getParent().getParent().getFileName() == null) {
+            var folder = self.resolveSibling(".arclight");
+            var relocation = folder.resolve("tmp.jar");
+            if (!Files.exists(folder)) {
+                Files.createDirectories(folder);
+            }
+            try {
+                if (!Files.isSymbolicLink(relocation)) {
+                    Files.createSymbolicLink(relocation, self);
+                }
+            } catch (Exception e) {
+                Files.copy(self, relocation, StandardCopyOption.REPLACE_EXISTING);
+            }
+            self = relocation;
+        }
         for (String arg : Files.lines(path).collect(Collectors.toList())) {
             if (jvmArgs && arg.startsWith("-")) {
                 if (arg.startsWith("-p ")) {
@@ -247,7 +264,7 @@ public class ForgeInstaller {
                     if (split[0].equals("legacyClassPath")) {
                         split[1] =
                             Stream.concat(
-                                Stream.concat(Stream.of(self, split[1]), installInfo.libraries.keySet().stream()
+                                Stream.concat(Stream.of(self.toString(), split[1]), installInfo.libraries.keySet().stream()
                                     .map(it -> Paths.get("libraries", Util.mavenToPath(it)))
                                     .peek(it -> {
                                         var name = it.getFileName().toString();