diff --git a/releasenotes.md b/releasenotes.md
index 5adc6b83f..37be342be 100644
--- a/releasenotes.md
+++ b/releasenotes.md
@@ -15,6 +15,7 @@
 - Fix No index OOB check for `[:^n]` #2123.
 - Fix regression in Time diff due to operator overloading #2124.
 - attrdef with any invalid name causes compiler assert #2128.
+- Correctly error on `@attrdef Foo = ;`.
 
 ### Stdlib changes
 - Added `String.quick_ztr` and `String.is_zstr`
diff --git a/src/compiler/parse_global.c b/src/compiler/parse_global.c
index 63f22800e..04266984b 100644
--- a/src/compiler/parse_global.c
+++ b/src/compiler/parse_global.c
@@ -2229,6 +2229,12 @@ static inline Decl *parse_attrdef(ParseContext *c)
 	if (try_consume(c, TOKEN_EOS)) return decl;
 
 	CONSUME_OR_RET(TOKEN_EQ, poisoned_decl);
+	if (tok_is(c, TOKEN_EOS))
+	{
+		PRINT_ERROR_LAST("Expected a list of attributes after '='.");
+		return poisoned_decl;
+	}
+
 	bool is_cond;
 	bool is_builtin = false;
 	if (!parse_attribute_list(c, &attributes, NULL, decl_needs_prefix(decl) ? &is_builtin : NULL, &is_cond, true)) return poisoned_decl;
diff --git a/test/test_suite/attributes/attrdef_err.c3 b/test/test_suite/attributes/attrdef_err.c3
new file mode 100644
index 000000000..376aa247c
--- /dev/null
+++ b/test/test_suite/attributes/attrdef_err.c3
@@ -0,0 +1,6 @@
+
+attrdef @Foo = ; // #error: Expected a list of attributes after
+fn void main()
+{
+
+}