diff --git a/Eigen/Core b/Eigen/Core
index ce27d10b0..f124aff09 100644
--- a/Eigen/Core
+++ b/Eigen/Core
@@ -169,6 +169,9 @@
 // defined in bits/termios.h
 #undef B0
 
+// defined in some GNU standard header
+#undef minor
+
 namespace Eigen {
 
 inline static const char *SimdInstructionSetsInUse(void) {
diff --git a/Eigen/src/Core/util/Macros.h b/Eigen/src/Core/util/Macros.h
index 77da6884f..94c15f0a7 100644
--- a/Eigen/src/Core/util/Macros.h
+++ b/Eigen/src/Core/util/Macros.h
@@ -26,8 +26,6 @@
 #ifndef EIGEN_MACROS_H
 #define EIGEN_MACROS_H
 
-#undef minor
-
 #define EIGEN_WORLD_VERSION 2
 #define EIGEN_MAJOR_VERSION 91
 #define EIGEN_MINOR_VERSION 0