diff --git a/checkin_notes b/checkin_notes
index c65ad28e55..c2ede34bba 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -5295,3 +5295,10 @@ David  3 Aug 2012
 
     sched/
         sched_send.cpp
+
+Rom    6 Aug 2012
+    - WIN: Don't include the newer DBGHELP symbols in MinGW64.
+        (From Oliver Bock)
+        
+    lib/
+        stackwalker_imports.h
diff --git a/lib/stackwalker_imports.h b/lib/stackwalker_imports.h
index d522f82761..c1d79b9902 100644
--- a/lib/stackwalker_imports.h
+++ b/lib/stackwalker_imports.h
@@ -21,7 +21,7 @@
 #define gle (GetLastError())
 #define TTBUFLEN                8096 // for a temp buffer (2^13)
 
-#if (defined(__CYGWIN32__) || defined(__MINGW32__)) && !defined(__MINGW64__)
+#if (defined(__CYGWIN32__) || defined(__MINGW32__)) && !defined(__MINGW64_VERSION_MAJOR)
 
 #define MAX_SYM_NAME            2000