diff --git a/src/tests/add-ons/translators/stxttranslator/STXTTranslatorTest.cpp b/src/tests/add-ons/translators/stxttranslator/STXTTranslatorTest.cpp
index a0bdec965a..fef3772ce8 100644
--- a/src/tests/add-ons/translators/stxttranslator/STXTTranslatorTest.cpp
+++ b/src/tests/add-ons/translators/stxttranslator/STXTTranslatorTest.cpp
@@ -270,7 +270,7 @@ TranslateTests(STXTTranslatorTest *ptest, BTranslatorRoster *proster,
 			pinput_file = &styled_file;
 		}
 		
-		BMallocIO mallio;
+		BMallocIO mallio, dmallio;
 		
 		// Convert to B_TRANSLATOR_ANY_TYPE (should be B_TRANSLATOR_TEXT)
 		ptest->NextSubTest();
@@ -288,6 +288,14 @@ TranslateTests(STXTTranslatorTest *ptest, BTranslatorRoster *proster,
 			B_TRANSLATOR_TEXT) == B_OK);
 		CPPUNIT_ASSERT(CompareStreams(mallio, plain_file) == true);
 		
+		// Convert plain mallio to B_TRANSLATOR_TEXT dmallio
+		ptest->NextSubTest();
+		CPPUNIT_ASSERT(dmallio.Seek(0, SEEK_SET) == 0);
+		CPPUNIT_ASSERT(dmallio.SetSize(0) == B_OK);
+		CPPUNIT_ASSERT(proster->Translate(&mallio, NULL, NULL, &dmallio,
+			B_TRANSLATOR_TEXT) == B_OK);
+		CPPUNIT_ASSERT(CompareStreams(dmallio, plain_file) == true);
+		
 		// Convert to B_STYLED_TEXT_FORMAT
 		ptest->NextSubTest();
 		CPPUNIT_ASSERT(mallio.Seek(0, SEEK_SET) == 0);
@@ -295,6 +303,22 @@ TranslateTests(STXTTranslatorTest *ptest, BTranslatorRoster *proster,
 		CPPUNIT_ASSERT(proster->Translate(pinput_file, NULL, NULL, &mallio,
 			B_STYLED_TEXT_FORMAT) == B_OK);
 		CPPUNIT_ASSERT(CompareStreams(mallio, styled_file) == true);
+		
+		// Convert styled mallio to B_TRANSLATOR_TEXT dmallio
+		ptest->NextSubTest();
+		CPPUNIT_ASSERT(dmallio.Seek(0, SEEK_SET) == 0);
+		CPPUNIT_ASSERT(dmallio.SetSize(0) == B_OK);
+		CPPUNIT_ASSERT(proster->Translate(&mallio, NULL, NULL, &dmallio,
+			B_TRANSLATOR_TEXT) == B_OK);
+		CPPUNIT_ASSERT(CompareStreams(dmallio, plain_file) == true);
+		
+		// Convert styled mallio to B_STYLED_TEXT_FORMAT dmallio
+		ptest->NextSubTest();
+		CPPUNIT_ASSERT(dmallio.Seek(0, SEEK_SET) == 0);
+		CPPUNIT_ASSERT(dmallio.SetSize(0) == B_OK);
+		CPPUNIT_ASSERT(proster->Translate(&mallio, NULL, NULL, &dmallio,
+			B_STYLED_TEXT_FORMAT) == B_OK);
+		CPPUNIT_ASSERT(CompareStreams(dmallio, styled_file) == true);
 	}
 	
 	delete[] styled_path;