diff --git a/build-files.txt b/build-files.txt
index 5b33cd8..f45f03a 100644
--- a/build-files.txt
+++ b/build-files.txt
@@ -7,7 +7,6 @@
 source/dub/package_.d
 source/dub/platform.d
 source/dub/project.d
-source/dub/registry.d
 source/dub/utils.d
 source/dub/compilers/compiler.d
 source/dub/compilers/dmd.d
diff --git a/source/app.d b/source/app.d
index 4d3ce8b..421a525 100644
--- a/source/app.d
+++ b/source/app.d
@@ -18,7 +18,6 @@
 import dub.package_;
 import dub.packagesupplier;
 import dub.project;
-import dub.registry;
 import dub.version_;
 
 import std.algorithm;
diff --git a/source/dub/dub.d b/source/dub/dub.d
index e2bdaeb..88e9792 100644
--- a/source/dub/dub.d
+++ b/source/dub/dub.d
@@ -16,7 +16,6 @@
 import dub.internal.vibecompat.data.json;
 import dub.internal.vibecompat.inet.url;
 import dub.utils;
-import dub.registry;
 import dub.package_;
 import dub.packagemanager;
 import dub.packagesupplier;
diff --git a/source/dub/project.d b/source/dub/project.d
index b0ed622..71b58db 100644
--- a/source/dub/project.d
+++ b/source/dub/project.d
@@ -16,7 +16,6 @@
 import dub.internal.vibecompat.data.json;
 import dub.internal.vibecompat.inet.url;
 import dub.utils;
-import dub.registry;
 import dub.package_;
 import dub.packagemanager;
 import dub.packagesupplier;
@@ -128,7 +127,7 @@
 		foreach(dp; m_dependencies)
 			if( dp.name == name )
 				return dp;
-		if(!isOptional) enforce(false, "Unknown dependency: "~name);
+		if(!isOptional) throw new Exception("Unknown dependency: "~name);
 		else return null;
 	}