diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index a966b4566..ebbb6f963 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -38,9 +38,11 @@ jobs:
 #   test python bindings
 #   build documentation
 #   Asan, ubsan, msan
+# Disabled pending clang dependencies for std::unordered_map
 
 - job: "LinuxMSan"
   displayName: "Ubuntu build - cmake"
+  condition: eq(0,1) 
   pool:
     vmImage: "Ubuntu-16.04"
   strategy:
diff --git a/src/math/lp/square_sparse_matrix.h b/src/math/lp/square_sparse_matrix.h
index c8361895f..39713fe25 100644
--- a/src/math/lp/square_sparse_matrix.h
+++ b/src/math/lp/square_sparse_matrix.h
@@ -21,7 +21,6 @@ Revision History:
 #pragma once
 #include "util/vector.h"
 #include "math/lp/permutation_matrix.h"
-#include <unordered_map>
 #include "math/lp/static_matrix.h"
 #include <set>
 #include <utility>