diff --git a/src/json-schema.hpp b/src/json-schema.hpp
index 165a9c9..df088da 100644
--- a/src/json-schema.hpp
+++ b/src/json-schema.hpp
@@ -153,7 +153,7 @@ public:
 	~json_validator();
 	json_validator &operator=(json_validator &&);
 
-	// insert and set thea root-schema
+	// insert and set the root-schema
 	void set_root_schema(const json &);
 
 	// validate a json-document based on the root-schema
diff --git a/src/json-validator.cpp b/src/json-validator.cpp
index 5db8b23..8f6526b 100644
--- a/src/json-validator.cpp
+++ b/src/json-validator.cpp
@@ -171,6 +171,7 @@ public:
 
 	void set_root_schema(json schema)
 	{
+		files_.clear();
 		root_ = schema::make(schema, this, {}, {{"#"}});
 
 		// load all files which have not yet been loaded
@@ -225,7 +226,7 @@ public:
 	json instance_;
 	std::string message_;
 
-	void error(const json::json_pointer & ptr, const json & instance, const std::string & message) override
+	void error(const json::json_pointer &ptr, const json &instance, const std::string &message) override
 	{
 		if (*this)
 			return;
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 5d08e41..b0ef6f5 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -21,8 +21,12 @@ endforeach()
 
 add_executable(uri uri.cpp)
 target_link_libraries(uri json-schema-validator)
+add_test(NAME uri COMMAND uri)
 
 add_executable(errors errors.cpp)
 target_link_libraries(errors json-schema-validator)
+add_test(NAME errors COMMAND errors)
 
-add_test(NAME uri COMMAND uri)
+add_executable(issue-70 issue-70.cpp)
+target_link_libraries(issue-70 json-schema-validator)
+add_test(NAME issue-70 COMMAND issue-70)
diff --git a/test/issue-70.cpp b/test/issue-70.cpp
new file mode 100644
index 0000000..7d42181
--- /dev/null
+++ b/test/issue-70.cpp
@@ -0,0 +1,44 @@
+#include <json-schema.hpp>
+
+using nlohmann::json;
+using nlohmann::json_schema::json_validator;
+
+static const json person_schema = R"(
+{
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "title": "A person",
+    "properties": {
+        "name": {
+            "description": "Name",
+            "type": "string"
+        },
+        "age": {
+            "description": "Age of the person",
+            "type": "number",
+            "minimum": 2,
+            "maximum": 200
+        },
+        "phones": {
+            "type": "array",
+            "items": {
+                 "type": "number"
+            }
+        }
+    },
+    "required": [
+                 "name",
+                 "age"
+                 ],
+    "additionalProperties": false,
+    "type": "object"
+})"_json;
+
+int main(void)
+{
+	json_validator validator;
+
+	validator.set_root_schema(person_schema);
+	validator.set_root_schema(person_schema);
+
+	return 0;
+}