diff --git a/mercurial/thirdparty/sha1dc/lib/ubc_check.h b/mercurial/thirdparty/sha1dc/lib/ubc_check.h
--- a/mercurial/thirdparty/sha1dc/lib/ubc_check.h
+++ b/mercurial/thirdparty/sha1dc/lib/ubc_check.h
@@ -28,7 +28,12 @@
 #endif
 
 #ifndef SHA1DC_NO_STANDARD_INCLUDES
+#if !defined(_MSC_VER) || _MSC_VER >= 1600
 #include <stdint.h>
+#else
+/* prior to Visual Studio 2010 */
+typedef unsigned __int32 uint32_t;
+#endif
 #endif
 
 #define DVMASKSIZE 1
diff --git a/mercurial/thirdparty/sha1dc/lib/ubc_check.c b/mercurial/thirdparty/sha1dc/lib/ubc_check.c
--- a/mercurial/thirdparty/sha1dc/lib/ubc_check.c
+++ b/mercurial/thirdparty/sha1dc/lib/ubc_check.c
@@ -25,8 +25,10 @@
 */
 
 #ifndef SHA1DC_NO_STANDARD_INCLUDES
+#if !defined(_MSC_VER) || _MSC_VER >= 1600
 #include <stdint.h>
 #endif
+#endif
 #ifdef SHA1DC_CUSTOM_INCLUDE_UBC_CHECK_C
 #include SHA1DC_CUSTOM_INCLUDE_UBC_CHECK_C
 #endif