diff --git a/src/lib/OpenEXR/ImfKeyCode.h b/src/lib/OpenEXR/ImfKeyCode.h
index 9fca7b4f01..4ed4a788d8 100644
--- a/src/lib/OpenEXR/ImfKeyCode.h
+++ b/src/lib/OpenEXR/ImfKeyCode.h
@@ -93,6 +93,7 @@ class IMF_EXPORT_TYPE KeyCode
     IMF_EXPORT
     KeyCode& operator= (const KeyCode& other);
 
+    IMF_EXPORT
     bool operator== (const KeyCode& other) const;
 
     //----------------------------
diff --git a/src/test/OpenEXRTest/testStandardAttributes.cpp b/src/test/OpenEXRTest/testStandardAttributes.cpp
index a0b894e19f..247f6f3a4a 100644
--- a/src/test/OpenEXRTest/testStandardAttributes.cpp
+++ b/src/test/OpenEXRTest/testStandardAttributes.cpp
@@ -388,6 +388,10 @@ writeReadKeyCode (const char fileName[])
         3,      // perfsPerFrame
         80);    // perfsPerCount
 
+    KeyCode k2 = k1;
+
+    assert (k2 == k1);
+    
     assert (k1.filmMfcCode () == 12);
     assert (k1.filmType () == 34);
     assert (k1.prefix () == 123456);