diff --git a/source/dub/generators/generator.d b/source/dub/generators/generator.d
index 3c5d6d7..cf47fd8 100644
--- a/source/dub/generators/generator.d
+++ b/source/dub/generators/generator.d
@@ -97,9 +97,15 @@
 			BuildSettings buildSettings;
 			auto config = configs[pack.name];
 			buildSettings.processVars(m_project, pack, pack.getBuildSettings(settings.platform, config), settings, true);
-			targets[pack.name] = TargetInfo(pack, [pack], config, buildSettings);
 
 			prepareGeneration(pack, m_project, settings, buildSettings);
+
+			// Regenerate buildSettings.sourceFiles
+			if (buildSettings.preGenerateCommands.length) {
+				buildSettings = BuildSettings.init;
+				buildSettings.processVars(m_project, pack, pack.getBuildSettings(settings.platform, config), settings, true);
+			}
+			targets[pack.name] = TargetInfo(pack, [pack], config, buildSettings);
 		}
 
 		configurePackages(m_project.rootPackage, targets, settings);
diff --git a/test/issue1474/.no_run b/test/issue1474/.no_run
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/test/issue1474/.no_run
diff --git a/test/issue1474/.no_test b/test/issue1474/.no_test
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/test/issue1474/.no_test
diff --git a/test/issue1474/dub.json b/test/issue1474/dub.json
new file mode 100644
index 0000000..80d9635
--- /dev/null
+++ b/test/issue1474/dub.json
@@ -0,0 +1,8 @@
+{
+	"name": "generated-sources",
+	"description": "Example of using pre generate commands to generate source code.",
+	"sourceFiles": ["ext/*.d"],
+	"preGenerateCommands": [
+		"echo 'extern(C) int fun42 () { return 42; }' > ext/fortytwo.d"
+	]
+}
diff --git a/test/issue1474/ext/kekw.d b/test/issue1474/ext/kekw.d
new file mode 100644
index 0000000..f1585d3
--- /dev/null
+++ b/test/issue1474/ext/kekw.d
@@ -0,0 +1 @@
+extern(C) string funkekw () { return "KEKW";}
diff --git a/test/issue1474/source/app.d b/test/issue1474/source/app.d
new file mode 100644
index 0000000..04a59e8
--- /dev/null
+++ b/test/issue1474/source/app.d
@@ -0,0 +1,10 @@
+import std.stdio;
+
+extern(C) string funkekw ();
+extern(C) int fun42 ();
+
+void main()
+{
+	writefln("ShouldBe42: %s", fun42());
+	writefln("Juan: %s", funkekw());
+}