diff --git a/math/openfst-vosk/files/patch-src_include_fst_bi-table.h b/math/openfst-vosk/files/patch-src_include_fst_bi-table.h
new file mode 100644
index 000000000000..b6b8a0a22c26
--- /dev/null
+++ b/math/openfst-vosk/files/patch-src_include_fst_bi-table.h
@@ -0,0 +1,11 @@
+--- src/include/fst/bi-table.h.orig	2021-02-07 08:38:45 UTC
++++ src/include/fst/bi-table.h
+@@ -327,7 +327,7 @@ class VectorHashBiTable {
+   }
+ 
+   VectorHashBiTable(const VectorHashBiTable<I, T, S, FP, H, HS> &table)
+-      : selector_(table.s_),
++      : selector_(table.selector_),
+         fp_(table.fp_),
+         h_(table.h_),
+         id2entry_(table.id2entry_),
diff --git a/math/openfst-vosk/files/patch-src_include_fst_fst.h b/math/openfst-vosk/files/patch-src_include_fst_fst.h
new file mode 100644
index 000000000000..ee516a070325
--- /dev/null
+++ b/math/openfst-vosk/files/patch-src_include_fst_fst.h
@@ -0,0 +1,13 @@
+--- src/include/fst/fst.h.orig	2021-02-07 08:38:45 UTC
++++ src/include/fst/fst.h
+@@ -701,8 +701,8 @@ class FstImpl {
+     properties_.store(impl.properties_.load(std::memory_order_relaxed),
+                       std::memory_order_relaxed);
+     type_ = impl.type_;
+-    isymbols_ = impl.isymbols_ ? impl.isymbols_->Copy() : nullptr;
+-    osymbols_ = impl.osymbols_ ? impl.osymbols_->Copy() : nullptr;
++    isymbols_.reset(impl.isymbols_ ? impl.isymbols_->Copy() : nullptr);
++    osymbols_.reset(impl.osymbols_ ? impl.osymbols_->Copy() : nullptr);
+     return *this;
+   }
+