diff --git a/python/protoc_gen_validate/validator.py b/python/protoc_gen_validate/validator.py
index db42847d9..6903513e9 100644
--- a/python/protoc_gen_validate/validator.py
+++ b/python/protoc_gen_validate/validator.py
@@ -377,7 +377,7 @@ def string_template(option_value, name):
     {%- endif -%}
     {%- if s['pattern'] %}
     if re.search(r\'{{ s['pattern'] }}\', {{ name }}) is None:
-        raise ValidationFailed(\"{{ name }} pattern does not match {{ s['pattern'] }}\")
+        raise ValidationFailed(\"{{ name }} pattern does not match \" + r\'{{ s['pattern'] }}\')
     {%- endif -%}
     {%- if s['prefix'] %}
     if not {{ name }}.startswith(\"{{ s['prefix'] }}\"):
diff --git a/templates/java/register.go b/templates/java/register.go
index baf6b7a68..64736179b 100644
--- a/templates/java/register.go
+++ b/templates/java/register.go
@@ -444,7 +444,7 @@ func (fns javaFuncs) javaStringEscape(s string) string {
 	s = s[1 : len(s)-1]
 	s = strings.ReplaceAll(s, `\u00`, `\x`)
 	s = strings.ReplaceAll(s, `\x`, `\\x`)
-	// s = strings.ReplaceAll(s, `\`, `\\`)
+	s = strings.ReplaceAll(s, `\`, `\\`)
 	s = strings.ReplaceAll(s, `"`, `\"`)
 	return `"` + s + `"`
 }
diff --git a/tests/harness/cases/strings.proto b/tests/harness/cases/strings.proto
index 19fe29e61..15641617d 100644
--- a/tests/harness/cases/strings.proto
+++ b/tests/harness/cases/strings.proto
@@ -20,6 +20,8 @@ message StringMinMaxBytes    { string val = 1 [(validate.rules).string = {min_by
 message StringEqualMinMaxBytes    { string val = 1 [(validate.rules).string = {min_bytes: 4, max_bytes: 8}]; }
 message StringPattern        { string val = 1 [(validate.rules).string.pattern = "(?i)^[a-z0-9]+$"]; }
 message StringPatternEscapes { string val = 1 [(validate.rules).string.pattern = "\\* \\\\ \\w"]; }
+message StringPatternQuote   { string val = 1 [(validate.rules).string.pattern = "^[^\"]*$"]; }
+message StringPatternHex     { string val = 1 [(validate.rules).string.pattern = "^\\x41+$"]; }
 message StringPrefix         { string val = 1 [(validate.rules).string.prefix = "foo"]; }
 message StringContains       { string val = 1 [(validate.rules).string.contains = "bar"]; }
 message StringNotContains    { string val = 1 [(validate.rules).string.not_contains = "bar"]; }
diff --git a/tests/harness/executor/cases.go b/tests/harness/executor/cases.go
index c8eb26583..b9ae6a77d 100644
--- a/tests/harness/executor/cases.go
+++ b/tests/harness/executor/cases.go
@@ -805,6 +805,12 @@ var stringCases = []TestCase{
 	{"string - pattern (escapes) - invalid", &cases.StringPatternEscapes{Val: "invalid"}, 1},
 	{"string - pattern (escapes) - invalid (empty)", &cases.StringPatternEscapes{Val: ""}, 1},
 
+	{"string - pattern (quote) - valid", &cases.StringPatternQuote{Val: "no quotes"}, 0},
+	{"string - pattern (quote) - invalid", &cases.StringPatternQuote{Val: "has\"quote"}, 1},
+
+	{"string - pattern (hex) - valid", &cases.StringPatternHex{Val: "AAA"}, 0},
+	{"string - pattern (hex) - invalid", &cases.StringPatternHex{Val: "BBB"}, 1},
+
 	{"string - prefix - valid", &cases.StringPrefix{Val: "foobar"}, 0},
 	{"string - prefix - valid (only)", &cases.StringPrefix{Val: "foo"}, 0},
 	{"string - prefix - invalid", &cases.StringPrefix{Val: "bar"}, 1},