diff --git a/vlib/v/checker/checker.v b/vlib/v/checker/checker.v
index c2fe0a8694..1173cbeb99 100644
--- a/vlib/v/checker/checker.v
+++ b/vlib/v/checker/checker.v
@@ -2460,6 +2460,9 @@ fn (mut c Checker) hash_stmt(mut node ast.HashStmt) {
 		'flag' {
 			// #flag linux -lm
 			mut flag := node.main
+			if flag == 'flag' { // Checks for empty flag
+				c.error('no argument(s) provided for #flag', node.pos)
+			}
 			if flag.contains('@VROOT') {
 				// c.note(checker.vroot_is_deprecated_message, node.pos)
 				flag = util.resolve_vmodroot(flag.replace('@VROOT', '@VMODROOT'), c.file.path) or {
diff --git a/vlib/v/parser/tests/hash_empty_flag_value.out b/vlib/v/parser/tests/hash_empty_flag_value.out
new file mode 100644
index 0000000000..bf815e2698
--- /dev/null
+++ b/vlib/v/parser/tests/hash_empty_flag_value.out
@@ -0,0 +1,3 @@
+vlib/v/parser/tests/hash_empty_flag_value.vv:1:1: error: no argument(s) provided for #flag
+    1 | #flag
+      | ~~~~~
\ No newline at end of file
diff --git a/vlib/v/parser/tests/hash_empty_flag_value.vv b/vlib/v/parser/tests/hash_empty_flag_value.vv
new file mode 100644
index 0000000000..461b0afeb2
--- /dev/null
+++ b/vlib/v/parser/tests/hash_empty_flag_value.vv
@@ -0,0 +1 @@
+#flag