diff --git a/test/err/bug1001.c b/test/err/bug1001.c
new file mode 100644
index 000000000..62737c178
--- /dev/null
+++ b/test/err/bug1001.c
@@ -0,0 +1,10 @@
+
+/* https://github.com/cc65/cc65/issues/1001 */
+
+#include <stdio.h>
+
+int main(void)
+{
+    printf("test",); /* should be an error */
+    return 0;
+}