diff --git a/src/word.cpp b/src/word.cpp
index db720dc1..1c1c1a6b 100644
--- a/src/word.cpp
+++ b/src/word.cpp
@@ -386,7 +386,7 @@ void word::generate(utility::outputStream& os, const string::size_type maxLineLe
 
 		maxRunLength = std::max(maxRunLength, curRunLength);
 
-		if (maxRunLength >= maxLineLength - 3)
+		if (((flags & text::FORCE_NO_ENCODING) == 0) && maxRunLength >= maxLineLength - 3)
 		{
 			// Generate with encoding forced
 			generate(os, maxLineLength, curLinePos, newLinePos, flags | text::FORCE_ENCODING, state);
diff --git a/tests/parser/textTest.cpp b/tests/parser/textTest.cpp
index b84f376c..746ac948 100644
--- a/tests/parser/textTest.cpp
+++ b/tests/parser/textTest.cpp
@@ -52,6 +52,7 @@ VMIME_TEST_SUITE_BEGIN
 		VMIME_TEST(testWhitespaceMBox)
 
 		VMIME_TEST(testFoldingAscii)
+		VMIME_TEST(testForcedNonEncoding)
 	VMIME_TEST_LIST_END
 
 
@@ -442,5 +443,15 @@ VMIME_TEST_SUITE_BEGIN
 			" =?us-ascii?Q?9012345678901234567890123456789?=", w.generate(50));
 	}
 
+	void testForcedNonEncoding()
+	{
+		// Testing long unbreakable and unencodable header
+		vmime::relay r;
+		r.parse(" from User (Ee9GMqZQ8t7IQwftfAFHd2KyScCYRrFSJ50tKEoXv2bVCG4HcPU80GGWiFabAvG77FekpGgF1h@[127.0.0.1]) by servername.hostname.com\n\t"
+				"with esmtp id 1NGTS9-2C0sqG0; Fri, 4 Dec 2009 09:23:49 +0100");
+
+		VASSERT_EQ("received.long", "from User\r\n (Ee9GMqZQ8t7IQwftfAFHd2KyScCYRrFSJ50tKEoXv2bVCG4HcPU80GGWiFabAvG77FekpGgF1h@[127.0.0.1])\r\n by servername.hostname.com with esmtp id 1NGTS9-2C0sqG0; Fri, 4 Dec 2009\r\n 09:23:49 +0100", r.generate(78));
+	}
+
 VMIME_TEST_SUITE_END