diff --git a/Eigen/src/Core/util/Macros.h b/Eigen/src/Core/util/Macros.h
index 5088099fb..052868097 100644
--- a/Eigen/src/Core/util/Macros.h
+++ b/Eigen/src/Core/util/Macros.h
@@ -142,14 +142,14 @@
 #define EIGEN_ALWAYS_INLINE_ATTRIB
 #endif
 
-#if EIGEN_GNUC_AT_LEAST(4,1) && !defined(__clang__) && !defined(__intel_compiler)
+#if EIGEN_GNUC_AT_LEAST(4,1) && !defined(__clang__) && !defined(__INTEL_COMPILER)
 #define EIGEN_FLATTEN_ATTRIB __attribute__((flatten))
 #else
 #define EIGEN_FLATTEN_ATTRIB
 #endif
 
 // EIGEN_FORCE_INLINE means "inline as much as possible"
-#if (defined _MSC_VER) || (defined __intel_compiler)
+#if (defined _MSC_VER) || (defined __INTEL_COMPILER)
 #define EIGEN_STRONG_INLINE __forceinline
 #else
 #define EIGEN_STRONG_INLINE inline
diff --git a/Eigen/src/Core/util/ReenableStupidWarnings.h b/Eigen/src/Core/util/ReenableStupidWarnings.h
index d1164a82c..92d2d95c0 100644
--- a/Eigen/src/Core/util/ReenableStupidWarnings.h
+++ b/Eigen/src/Core/util/ReenableStupidWarnings.h
@@ -1,5 +1,5 @@
 #ifdef _MSC_VER
   #pragma warning( pop )
-#elif defined __intel_compiler
+#elif defined __INTEL_COMPILER
   #pragma warning pop
 #endif
\ No newline at end of file