diff --git a/src/core/model/matrix-array.cc b/src/core/model/matrix-array.cc
index 8862bb89b..0d8da1961 100644
--- a/src/core/model/matrix-array.cc
+++ b/src/core/model/matrix-array.cc
@@ -13,6 +13,7 @@
 #if defined(__GNUC__) && !defined(__clang__)
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wclass-memaccess"
+#pragma GCC diagnostic ignored "-Wunused-variable"
 #endif
 
 #include <Eigen/Dense>