diff --git a/vm/master.hpp b/vm/master.hpp
index 9ba4ebd64b..dca3d7473c 100755
--- a/vm/master.hpp
+++ b/vm/master.hpp
@@ -29,15 +29,17 @@
 #include <vector>
 #include <iostream>
 
+#define FACTOR_STRINGIZE(x) #x
+
 /* Record compiler version */
 #if defined(__clang__)
 	#define FACTOR_COMPILER_VERSION "Clang (GCC " __VERSION__ ")"
 #elif defined(__INTEL_COMPILER)
-	#define FACTOR_COMPILER_VERSION "Intel C Compiler " #__INTEL_COMPILER
+	#define FACTOR_COMPILER_VERSION "Intel C Compiler " FACTOR_STRINGIZE(__INTEL_COMPILER)
 #elif defined(__GNUC__)
 	#define FACTOR_COMPILER_VERSION "GCC " __VERSION__
 #elif defined(_MSC_FULL_VER)
-	#define FACTOR_COMPILER_VERSION "Microsoft Visual C++ " #_MSC_FULL_VER
+	#define FACTOR_COMPILER_VERSION "Microsoft Visual C++ " FACTOR_STRINGIZE(_MSC_FULL_VER)
 #else
 	#define FACTOR_COMPILER_VERSION "unknown"
 #endif