diff --git a/include/rapidjson/schema.h b/include/rapidjson/schema.h
index 40e78ac..99ef053 100644
--- a/include/rapidjson/schema.h
+++ b/include/rapidjson/schema.h
@@ -18,8 +18,6 @@
 #include "document.h"
 #include <cmath> // HUGE_VAL, abs, floor
 
-#define RAPIDJSON_SCHEMA_USE_STDREGEX 0
-
 #if !defined(RAPIDJSON_SCHEMA_USE_STDREGEX) && (__cplusplus >=201103L || (defined(_MSC_VER) && _MSC_VER >= 1800))
 #define RAPIDJSON_SCHEMA_USE_STDREGEX 1
 #else
@@ -30,6 +28,12 @@
 #include <regex>
 #endif
 
+#if RAPIDJSON_SCHEMA_USE_STDREGEX
+#define RAPIDJSON_SCHEMA_HAS_REGEX 1
+#else
+#define RAPIDJSON_SCHEMA_HAS_REGEX 0
+#endif
+
 #if defined(__GNUC__)
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(effc++)
@@ -669,7 +673,7 @@ private:
 
     static bool IsPatternMatch(const std::basic_regex<Ch>* pattern, const Ch *str, SizeType length) {
         std::match_results<const Ch*> r;
-        return std::regex_search(str, str + length, r, pattern);
+        return std::regex_search(str, str + length, r, *pattern);
     }
 #else
     template <typename ValueType>
diff --git a/test/unittest/schematest.cpp b/test/unittest/schematest.cpp
index 7db33f8..dd1e163 100644
--- a/test/unittest/schematest.cpp
+++ b/test/unittest/schematest.cpp
@@ -385,6 +385,7 @@ TEST(SchemaValidator, Object_SchemaDependencies) {
     VALIDATE(s, "{\"name\": \"John Doe\", \"billing_address\" : \"555 Debtor's Lane\"}", true);
 }
 
+#if RAPIDJSON_SCHEMA_HAS_REGEX
 TEST(SchemaValidator, Object_PatternProperties) {
     Document sd;
     sd.Parse(
@@ -424,6 +425,7 @@ TEST(SchemaValidator, Object_PatternProperties_AdditionalProperties) {
     VALIDATE(s, "{ \"keyword\": \"value\" }", true);
     VALIDATE(s, "{ \"keyword\": 42 }", false);
 }
+#endif
 
 TEST(SchemaValidator, Array) {
     Document sd;