diff --git a/tools/edb2mt.cpp b/tools/edb2mt.cpp
index 159b2c4fc..8ed992b95 100644
--- a/tools/edb2mt.cpp
+++ b/tools/edb2mt.cpp
@@ -206,12 +206,14 @@ static void read_col(libesedb_record_t *row, unsigned int x,
 			throw az_error("EE-1014", err);
 	} else if (is_lval) {
 		ese_lval_ptr lv;
+		uint64_t dsize64 = 0;
 		if (libesedb_record_get_long_value(row, x, &unique_tie(lv), &~unique_tie(err)) < 1)
 			throw az_error("EE-1018", err);
-		if (libesedb_long_value_get_data_size(lv.get(), &dsize, &~unique_tie(err)) < 1)
+		if (libesedb_long_value_get_data_size(lv.get(), &dsize64, &~unique_tie(err)) < 1)
 			throw az_error("EE-1019", err);
-		if (dsize == 0)
+		if (dsize64 == 0)
 			return;
+		dsize = std::max(dsize64, static_cast<uint64_t>(UINT32_MAX));
 		udata.resize(dsize);
 		if (libesedb_long_value_get_data(lv.get(),
 		    TOU8(udata.data()), dsize, &~unique_tie(err)) < 1)