diff --git a/biology/ncbi-blast+/files/patch-src_objtools_blast_seqdb__reader_test_seqdb__perf.cpp b/biology/ncbi-blast+/files/patch-src_objtools_blast_seqdb__reader_test_seqdb__perf.cpp
new file mode 100644
index 000000000000..64f24cecd4cc
--- /dev/null
+++ b/biology/ncbi-blast+/files/patch-src_objtools_blast_seqdb__reader_test_seqdb__perf.cpp
@@ -0,0 +1,14 @@
+--- src/objtools/blast/seqdb_reader/test/seqdb_perf.cpp.orig	2019-07-10 10:11:51.713901000 -0500
++++ src/objtools/blast/seqdb_reader/test/seqdb_perf.cpp	2019-07-10 10:15:40.994964000 -0500
+@@ -137,8 +137,10 @@ CSeqDBPerfApp::x_ScanDatabase()
+     }
+     LOG_POST(Info << "Will go over " << oids2iterate.size() << " sequences");
+ 
++    // kScanUncompressed is read only and initialized before threading
++    // so shared should be fine here
+     #pragma omp parallel default(none) num_threads(m_DbHandles.size()) \
+-                         shared(oids2iterate) if(m_DbHandles.size() > 1)
++                         shared(oids2iterate,kScanUncompressed) if(m_DbHandles.size() > 1)
+     {
+         int thread_id = 0;
+ #ifdef _OPENMP