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diff --git a/lib/dpx/dpx.hh b/lib/dpx/dpx.hh
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index 02ae833..5639aaa 100644
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--- a/lib/dpx/dpx.hh
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+++ b/lib/dpx/dpx.hh
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@@ -297,7 +297,7 @@ struct dpx {
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 		compliance_e current_compliance;
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 		endian_mode_e current_endian_mode;
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-		std::istream::streampos header_start;
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+		std::streampos header_start;
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 	public:
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 		virtual ~dpx();