diff --git a/testdata/parser/negative/10.txt b/testdata/parser/negative/10.txt
new file mode 100644
index 0000000000000000000000000000000000000000..439a71d657dd786f5f5f8f14e75563f06360d437
--- /dev/null
+++ b/testdata/parser/negative/10.txt
@@ -0,0 +1,3 @@
+Parse error at 10.pdl:8:5: Illegal nested synchronous statement
+				synchronous {
+				^