diff --git a/src/main/java/net/fabricmc/loom/AbstractPlugin.java b/src/main/java/net/fabricmc/loom/AbstractPlugin.java
index 84e09ab..68e7cf8 100644
--- a/src/main/java/net/fabricmc/loom/AbstractPlugin.java
+++ b/src/main/java/net/fabricmc/loom/AbstractPlugin.java
@@ -241,7 +241,7 @@ public class AbstractPlugin implements Plugin<Project> {
 		Javadoc javadoc = (Javadoc) project.getTasks().getByName(JavaPlugin.JAVADOC_TASK_NAME);
 		javadoc.setClasspath(main.getOutput().plus(main.getCompileClasspath()));
 
-		if (!Boolean.parseBoolean(System.getProperty("idea.sync.active", "false"))) {
+		if (!project.getExtensions().getByType(LoomGradleExtension.class).ideSync()) {
 			// Add Mixin dependencies
 			project.getDependencies().add(JavaPlugin.ANNOTATION_PROCESSOR_CONFIGURATION_NAME, "net.fabricmc:fabric-mixin-compile-extensions:" + Constants.MIXIN_COMPILE_EXTENSIONS_VERSION);
 		}
diff --git a/src/main/java/net/fabricmc/loom/LoomGradleExtension.java b/src/main/java/net/fabricmc/loom/LoomGradleExtension.java
index 959f573..7a05416 100644
--- a/src/main/java/net/fabricmc/loom/LoomGradleExtension.java
+++ b/src/main/java/net/fabricmc/loom/LoomGradleExtension.java
@@ -290,4 +290,8 @@ public class LoomGradleExtension {
 
 		return refmapName;
 	}
+
+	public boolean ideSync() {
+		return Boolean.parseBoolean(System.getProperty("idea.sync.active", "false"));
+	}
 }
diff --git a/src/main/java/net/fabricmc/loom/util/LoomDependencyManager.java b/src/main/java/net/fabricmc/loom/util/LoomDependencyManager.java
index fce9a26..35349df 100644
--- a/src/main/java/net/fabricmc/loom/util/LoomDependencyManager.java
+++ b/src/main/java/net/fabricmc/loom/util/LoomDependencyManager.java
@@ -156,6 +156,8 @@ public class LoomDependencyManager {
 	}
 
 	private static void handleInstallerJson(JsonObject jsonObject, Project project) {
+		LoomGradleExtension extension = project.getExtensions().getByType(LoomGradleExtension.class);
+
 		JsonObject libraries = jsonObject.get("libraries").getAsJsonObject();
 		Configuration mcDepsConfig = project.getConfigurations().getByName(Constants.MINECRAFT_DEPENDENCIES);
 		Configuration apDepsConfig = project.getConfigurations().getByName("annotationProcessor");
@@ -166,7 +168,10 @@ public class LoomDependencyManager {
 			ExternalModuleDependency modDep = (ExternalModuleDependency) project.getDependencies().create(name);
 			modDep.setTransitive(false);
 			mcDepsConfig.getDependencies().add(modDep);
-			apDepsConfig.getDependencies().add(modDep);
+
+			if (!extension.ideSync()) {
+				apDepsConfig.getDependencies().add(modDep);
+			}
 
 			project.getLogger().debug("Loom adding " + name + " from installer JSON");
 
diff --git a/src/main/java/net/fabricmc/loom/util/SetupIntelijRunConfigs.java b/src/main/java/net/fabricmc/loom/util/SetupIntelijRunConfigs.java
index 018eb0c..5066746 100644
--- a/src/main/java/net/fabricmc/loom/util/SetupIntelijRunConfigs.java
+++ b/src/main/java/net/fabricmc/loom/util/SetupIntelijRunConfigs.java
@@ -59,9 +59,10 @@ public class SetupIntelijRunConfigs {
 	}
 
 	private static void generate(Project project) throws IOException {
-		//Ensures the assets are downloaded when idea is syncing a project
-		if (Boolean.parseBoolean(System.getProperty("idea.sync.active", "false"))) {
-			LoomGradleExtension extension = project.getExtensions().getByType(LoomGradleExtension.class);
+		LoomGradleExtension extension = project.getExtensions().getByType(LoomGradleExtension.class);
+
+		if (extension.ideSync()) {
+			//Ensures the assets are downloaded when idea is syncing a project
 			MinecraftAssetsProvider.provide(extension.getMinecraftProvider(), project);
 			MinecraftNativesProvider.provide(extension.getMinecraftProvider(), project);
 		}