diff --git a/test/issue-303/CMakeLists.txt b/test/issue-303/CMakeLists.txt
new file mode 100644
index 0000000..5131e9b
--- /dev/null
+++ b/test/issue-303/CMakeLists.txt
@@ -0,0 +1,3 @@
+add_test_simple_schema(Issue::303
+                       ${CMAKE_CURRENT_SOURCE_DIR}/schema.json
+                       ${CMAKE_CURRENT_SOURCE_DIR}/instance.json)
diff --git a/test/issue-303/instance.json b/test/issue-303/instance.json
new file mode 100644
index 0000000..fc9aa25
--- /dev/null
+++ b/test/issue-303/instance.json
@@ -0,0 +1 @@
+1234567890123
diff --git a/test/issue-303/schema.json b/test/issue-303/schema.json
new file mode 100644
index 0000000..9b58e24
--- /dev/null
+++ b/test/issue-303/schema.json
@@ -0,0 +1,4 @@
+{
+    "type": "integer",
+    "minimum": 0
+}