diff --git a/tests/test_flacpicture.cpp b/tests/test_flacpicture.cpp
index 0ba9452f..eefa9306 100644
--- a/tests/test_flacpicture.cpp
+++ b/tests/test_flacpicture.cpp
@@ -22,8 +22,10 @@ public:
 
   void testParse()
   {
-    char data[] = { 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x09, 0x69, 0x6D, 0x61, 0x67, 0x65, 0x2F, 0x70, 0x6E, 0x67, 0x00, 0x00, 0x00, 0x08, 0x41, 0x20, 0x70, 0x69, 0x78, 0x65, 0x6C, 0x2E, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x96, 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, 0x00, 0x00, 0x00, 0x0D, 0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x08, 0x02, 0x00, 0x00, 0x00, 0x90, 0x77, 0x53, 0xDE, 0x00, 0x00, 0x00, 0x09, 0x70, 0x48, 0x59, 0x73, 0x00, 0x00, 0x0B, 0x13, 0x00, 0x00, 0x0B, 0x13, 0x01, 0x00, 0x9A, 0x9C, 0x18, 0x00, 0x00, 0x00, 0x07, 0x74, 0x49, 0x4D, 0x45, 0x07, 0xD6, 0x0B, 0x1C, 0x0A, 0x36, 0x06, 0x08, 0x44, 0x3D, 0x32, 0x00, 0x00, 0x00, 0x1D, 0x74, 0x45, 0x58, 0x74, 0x43, 0x6F, 0x6D, 0x6D, 0x65, 0x6E, 0x74, 0x00, 0x43, 0x72, 0x65, 0x61, 0x74, 0x65, 0x64, 0x20, 0x77, 0x69, 0x74, 0x68, 0x20, 0x54, 0x68, 0x65, 0x20, 0x47, 0x49, 0x4D, 0x50, 0xEF, 0x64, 0x25, 0x6E, 0x00, 0x00, 0x00, 0x0C, 0x49, 0x44, 0x41, 0x54, 0x08, 0xD7, 0x63, 0xF8, 0xFF, 0xFF, 0x3F, 0x00, 0x05, 0xFE, 0x02, 0xFE, 0xDC, 0xCC, 0x59, 0xE7, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4E, 0x44, 0xAE, 0x42, 0x60, 0x82 };
-    FLAC::Picture pic(ByteVector(data, 199));
+    const unsigned char data[] = { 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x09, 0x69, 0x6D, 0x61, 0x67, 0x65, 0x2F, 0x70, 0x6E, 0x67, 0x00, 0x00, 0x00, 0x08, 0x41, 0x20, 0x70, 0x69, 0x78, 0x65, 0x6C, 0x2E, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x96, 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, 0x00, 0x00, 0x00, 0x0D, 0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x08, 0x02, 0x00, 0x00, 0x00, 0x90, 0x77, 0x53, 0xDE, 0x00, 0x00, 0x00, 0x09, 0x70, 0x48, 0x59, 0x73, 0x00, 0x00, 0x0B, 0x13, 0x00, 0x00, 0x0B, 0x13, 0x01, 0x00, 0x9A, 0x9C, 0x18, 0x00, 0x00, 0x00, 0x07, 0x74, 0x49, 0x4D, 0x45, 0x07, 0xD6, 0x0B, 0x1C, 0x0A, 0x36, 0x06, 0x08, 0x44, 0x3D, 0x32, 0x00, 0x00, 0x00, 0x1D, 0x74, 0x45, 0x58, 0x74, 0x43, 0x6F, 0x6D, 0x6D, 0x65, 0x6E, 0x74, 0x00, 0x43, 0x72, 0x65, 0x61, 0x74, 0x65, 0x64, 0x20, 0x77, 0x69, 0x74, 0x68, 0x20, 0x54, 0x68, 0x65, 0x20, 0x47, 0x49, 0x4D, 0x50, 0xEF, 0x64, 0x25, 0x6E, 0x00, 0x00, 0x00, 0x0C, 0x49, 0x44, 0x41, 0x54, 0x08, 0xD7, 0x63, 0xF8, 0xFF, 0xFF, 0x3F, 0x00, 0x05, 0xFE, 0x02, 0xFE, 0xDC, 0xCC, 0x59, 0xE7, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4E, 0x44, 0xAE, 0x42, 0x60, 0x82 };
+    const char *pdata = reinterpret_cast<const char*>(data);
+
+    FLAC::Picture pic(ByteVector(pdata, 199));
 
     CPPUNIT_ASSERT_EQUAL(3, int(pic.type()));
     CPPUNIT_ASSERT_EQUAL(1, pic.width());
@@ -37,9 +39,11 @@ public:
 
   void testPassThrough()
   {
-    char data[] = { 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x09, 0x69, 0x6D, 0x61, 0x67, 0x65, 0x2F, 0x70, 0x6E, 0x67, 0x00, 0x00, 0x00, 0x08, 0x41, 0x20, 0x70, 0x69, 0x78, 0x65, 0x6C, 0x2E, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x96, 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, 0x00, 0x00, 0x00, 0x0D, 0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x08, 0x02, 0x00, 0x00, 0x00, 0x90, 0x77, 0x53, 0xDE, 0x00, 0x00, 0x00, 0x09, 0x70, 0x48, 0x59, 0x73, 0x00, 0x00, 0x0B, 0x13, 0x00, 0x00, 0x0B, 0x13, 0x01, 0x00, 0x9A, 0x9C, 0x18, 0x00, 0x00, 0x00, 0x07, 0x74, 0x49, 0x4D, 0x45, 0x07, 0xD6, 0x0B, 0x1C, 0x0A, 0x36, 0x06, 0x08, 0x44, 0x3D, 0x32, 0x00, 0x00, 0x00, 0x1D, 0x74, 0x45, 0x58, 0x74, 0x43, 0x6F, 0x6D, 0x6D, 0x65, 0x6E, 0x74, 0x00, 0x43, 0x72, 0x65, 0x61, 0x74, 0x65, 0x64, 0x20, 0x77, 0x69, 0x74, 0x68, 0x20, 0x54, 0x68, 0x65, 0x20, 0x47, 0x49, 0x4D, 0x50, 0xEF, 0x64, 0x25, 0x6E, 0x00, 0x00, 0x00, 0x0C, 0x49, 0x44, 0x41, 0x54, 0x08, 0xD7, 0x63, 0xF8, 0xFF, 0xFF, 0x3F, 0x00, 0x05, 0xFE, 0x02, 0xFE, 0xDC, 0xCC, 0x59, 0xE7, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4E, 0x44, 0xAE, 0x42, 0x60, 0x82 };
-    FLAC::Picture pic(ByteVector(data, 199));
-    CPPUNIT_ASSERT_EQUAL(ByteVector(data, 199), pic.render());
+    const unsigned char data[] = { 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x09, 0x69, 0x6D, 0x61, 0x67, 0x65, 0x2F, 0x70, 0x6E, 0x67, 0x00, 0x00, 0x00, 0x08, 0x41, 0x20, 0x70, 0x69, 0x78, 0x65, 0x6C, 0x2E, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x96, 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, 0x00, 0x00, 0x00, 0x0D, 0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x08, 0x02, 0x00, 0x00, 0x00, 0x90, 0x77, 0x53, 0xDE, 0x00, 0x00, 0x00, 0x09, 0x70, 0x48, 0x59, 0x73, 0x00, 0x00, 0x0B, 0x13, 0x00, 0x00, 0x0B, 0x13, 0x01, 0x00, 0x9A, 0x9C, 0x18, 0x00, 0x00, 0x00, 0x07, 0x74, 0x49, 0x4D, 0x45, 0x07, 0xD6, 0x0B, 0x1C, 0x0A, 0x36, 0x06, 0x08, 0x44, 0x3D, 0x32, 0x00, 0x00, 0x00, 0x1D, 0x74, 0x45, 0x58, 0x74, 0x43, 0x6F, 0x6D, 0x6D, 0x65, 0x6E, 0x74, 0x00, 0x43, 0x72, 0x65, 0x61, 0x74, 0x65, 0x64, 0x20, 0x77, 0x69, 0x74, 0x68, 0x20, 0x54, 0x68, 0x65, 0x20, 0x47, 0x49, 0x4D, 0x50, 0xEF, 0x64, 0x25, 0x6E, 0x00, 0x00, 0x00, 0x0C, 0x49, 0x44, 0x41, 0x54, 0x08, 0xD7, 0x63, 0xF8, 0xFF, 0xFF, 0x3F, 0x00, 0x05, 0xFE, 0x02, 0xFE, 0xDC, 0xCC, 0x59, 0xE7, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4E, 0x44, 0xAE, 0x42, 0x60, 0x82 };
+    const char *pdata = reinterpret_cast<const char*>(data);
+
+    FLAC::Picture pic(ByteVector(pdata, 199));
+    CPPUNIT_ASSERT_EQUAL(ByteVector(pdata, 199), pic.render());
   }
 
 };