diff --git a/source/dub/generators/build.d b/source/dub/generators/build.d
index 8e0a171..1895e3b 100644
--- a/source/dub/generators/build.d
+++ b/source/dub/generators/build.d
@@ -47,6 +47,11 @@
 	{
 		scope (exit) cleanupTemporaries();
 
+		auto root_ti = targets[m_project.rootPackage.name];
+
+		enforce(!(settings.rdmd && root_ti.buildSettings.targetType == TargetType.none),
+				"Building package with target type \"none\" with rdmd is not supported yet.");
+
 		logInfo("Performing \"%s\" build using %s for %-(%s, %).",
 			settings.buildType, settings.platform.compilerBinary, settings.platform.architecture);
 
@@ -76,13 +81,13 @@
 				}
 			}
 			NativePath tpath;
-			if (buildTarget(settings, bs, ti.pack, ti.config, ti.packages, additional_dep_files, tpath))
-				any_cached = true;
+			if (bs.targetType != TargetType.none)
+				if (buildTarget(settings, bs, ti.pack, ti.config, ti.packages, additional_dep_files, tpath))
+					any_cached = true;
 			target_paths[target] = tpath;
 		}
 
 		// build all targets
-		auto root_ti = targets[m_project.rootPackage.name];
 		if (settings.rdmd || root_ti.buildSettings.targetType == TargetType.staticLibrary) {
 			// RDMD always builds everything at once and static libraries don't need their
 			// dependencies to be built
diff --git a/source/dub/generators/generator.d b/source/dub/generators/generator.d
index ef51351..b526b7b 100644
--- a/source/dub/generators/generator.d
+++ b/source/dub/generators/generator.d
@@ -267,7 +267,7 @@
 				}
 				auto depti = &targets[depname];
 				const depbs = &depti.buildSettings;
-				if (depbs.targetType == TargetType.executable)
+				if (depbs.targetType == TargetType.executable && ti.buildSettings.targetType != TargetType.none)
 					continue;
 
 				// add to (link) dependencies
@@ -282,6 +282,9 @@
 				if (depbs.targetType == TargetType.staticLibrary)
 					ti.linkDependencies = ti.linkDependencies.filter!(d => !depti.linkDependencies.canFind(d)).array ~ depti.linkDependencies;
 			}
+
+			enforce(!(ti.buildSettings.targetType == TargetType.none && ti.dependencies.empty),
+				"Package with target type \"none\" must have dependencies to build.");
 		}
 
 		collectDependencies(rootPackage, targets[rootPackage.name], targets);
@@ -422,9 +425,8 @@
 			settings.compiler.extractBuildOptions(ti.buildSettings);
 
 			auto tt = ti.buildSettings.targetType;
-			bool generatesBinary = tt != TargetType.sourceLibrary && tt != TargetType.none;
-			enforce (generatesBinary || ti.pack !is m_project.rootPackage || (ti.buildSettings.options & BuildOption.syntaxOnly),
-				format("Main package must have a binary target type, not %s. Cannot build.", tt));
+			enforce (tt != TargetType.sourceLibrary || ti.pack !is m_project.rootPackage || (ti.buildSettings.options & BuildOption.syntaxOnly),
+				format("Main package must not have target type \"%s\". Cannot build.", tt));
 		}
 	}
 }