diff --git a/src/main/java/net/fabricmc/loom/task/GenIdeaProjectTask.java b/src/main/java/net/fabricmc/loom/task/GenIdeaProjectTask.java
index 4260d64..fdf3ebc 100644
--- a/src/main/java/net/fabricmc/loom/task/GenIdeaProjectTask.java
+++ b/src/main/java/net/fabricmc/loom/task/GenIdeaProjectTask.java
@@ -167,11 +167,12 @@ public class GenIdeaProjectTask extends DefaultTask {
         }
 
         IdeaRunConfig ideaClient = new IdeaRunConfig();
-        ideaClient.mainClass = "net.fabricmc.base.launch.FabricClientMain ";
+        ideaClient.mainClass = "net.minecraft.launchwrapper.Launch";
         ideaClient.projectName = getProject().getName();
         ideaClient.configName = "Minecraft Client";
         ideaClient.runDir = "file://$PROJECT_DIR$/" + extension.runDir;
-        ideaClient.arguments = "--assetIndex " + version.assetIndex.id + " --assetsDir " + new File(Constants.CACHE_FILES, "assets").getAbsolutePath();
+        ideaClient.vmArgs = "-Djava.library.path=../.gradle/minecraft/natives/ -Dfabric.development=true";
+        ideaClient.programArgs = "--tweakClass net.fabricmc.base.launch.FabricClientTweaker --assetIndex " + version.assetIndex.id + " --assetsDir " + new File(Constants.CACHE_FILES, "assets").getAbsolutePath();
 
         runManager.appendChild(ideaClient.genRuns(runManager));
 
diff --git a/src/main/java/net/fabricmc/loom/util/IdeaRunConfig.java b/src/main/java/net/fabricmc/loom/util/IdeaRunConfig.java
index 6faa9b0..681d43b 100644
--- a/src/main/java/net/fabricmc/loom/util/IdeaRunConfig.java
+++ b/src/main/java/net/fabricmc/loom/util/IdeaRunConfig.java
@@ -40,7 +40,8 @@ public class IdeaRunConfig {
     public String projectName;
     public String mainClass;
     public String runDir;
-    public String arguments;
+    public String vmArgs;
+    public String programArgs;
 
     public Element genRuns(Element doc) throws IOException, ParserConfigurationException, TransformerException {
         Element root = this.addXml(doc, "component", ImmutableMap.of("name", "ProjectRunConfigurationManager"));
@@ -50,8 +51,12 @@ public class IdeaRunConfig {
         this.addXml(root, "option", ImmutableMap.of("name", "MAIN_CLASS_NAME", "value", mainClass));
         this.addXml(root, "option", ImmutableMap.of("name", "WORKING_DIRECTORY", "value", runDir));
 
-        if (!Strings.isNullOrEmpty(arguments)) {
-            this.addXml(root, "option", ImmutableMap.of("name", "PROGRAM_PARAMETERS", "value", arguments));
+        if (!Strings.isNullOrEmpty(vmArgs)) {
+            this.addXml(root, "option", ImmutableMap.of("name", "VM_PARAMETERS", "value", vmArgs));
+        }
+
+        if (!Strings.isNullOrEmpty(programArgs)) {
+            this.addXml(root, "option", ImmutableMap.of("name", "PROGRAM_PARAMETERS", "value", programArgs));
         }
         return root;
     }