diff --git a/vlib/v/builder/cc.v b/vlib/v/builder/cc.v
index 5e7b4b1296..7967429a48 100644
--- a/vlib/v/builder/cc.v
+++ b/vlib/v/builder/cc.v
@@ -194,7 +194,7 @@ fn (mut v Builder) setup_ccompiler_options(ccompiler string) {
 		'-Wcast-qual', '-Wdate-time', '-Wduplicated-branches', '-Wduplicated-cond', '-Wformat=2', '-Winit-self',
 		'-Winvalid-pch', '-Wjump-misses-init', '-Wlogical-op', '-Wmultichar', '-Wnested-externs', '-Wnull-dereference',
 		'-Wpacked', '-Wpointer-arith', '-Wshadow', '-Wswitch-default', '-Wswitch-enum', '-Wno-unused-parameter',
-		'-Wno-unknown-warning-option', '-Wno-format-nonliteral']
+		'-Wno-unknown-warning-option', '-Wno-format-nonliteral', '-Wno-unused-command-line-argument']
 	if v.pref.os == .ios {
 		ccoptions.args << '-framework Foundation'
 		ccoptions.args << '-framework UIKit'
diff --git a/vlib/v/gen/cgen.v b/vlib/v/gen/cgen.v
index 82708505d0..d5885f75c9 100644
--- a/vlib/v/gen/cgen.v
+++ b/vlib/v/gen/cgen.v
@@ -144,12 +144,12 @@ pub fn cgen(files []ast.File, table &table.Table, pref &pref.Preferences) string
 	if pref.build_mode == .build_module {
 		// TODO: detect this properly for all cases
 		// either get if from an earlier stage or use the lookup paths
-		if pref.path.contains('vlib' + os.path_separator) {
-			module_built = pref.path.after('vlib' + os.path_separator).replace(os.path_separator,
-				'.')
-		} else if pref.path.contains('.vmodules' + os.path_separator) {
-			module_built = pref.path.after('.vmodules' + os.path_separator).replace(os.path_separator,
-				'.')
+		for dir_name in ['vlib', '.vmodules', 'modules'] {
+			if pref.path.contains(dir_name + os.path_separator) {
+				module_built = pref.path.after(dir_name + os.path_separator).replace(os.path_separator,
+					'.')
+				break
+			}
 		}
 	}
 	mut timers_should_print := false