diff --git a/Makefile b/Makefile
index df81a4c34a22df6ba83dd3d1738e870333c42bc4..4231023c0b80429ff4e44f315eb099743d4d043a 100644
--- a/Makefile
+++ b/Makefile
@@ -688,6 +688,9 @@ KBUILD_CFLAGS   += $(call cc-option,-Werror=implicit-int)
 # require functions to have arguments in prototypes, not empty 'int foo()'
 KBUILD_CFLAGS   += $(call cc-option,-Werror=strict-prototypes)
 
+# Prohibit date/time macros, which would make the build non-deterministic
+KBUILD_CFLAGS   += $(call cc-option,-Werror=date-time)
+
 # use the deterministic mode of AR if available
 KBUILD_ARFLAGS := $(call ar-option,D)
 
diff --git a/arch/x86/math-emu/errors.c b/arch/x86/math-emu/errors.c
index 59d353d2c599ec26d21a9ab65ea2641e121b25a5..a5449089cd9fef6e58a03174c5fe5a34cd48983a 100644
--- a/arch/x86/math-emu/errors.c
+++ b/arch/x86/math-emu/errors.c
@@ -330,11 +330,6 @@ asmlinkage void FPU_exception(int n)
 
 	RE_ENTRANT_CHECK_OFF;
 	if ((~control_word & n & CW_Exceptions) || (n == EX_INTERNAL)) {
-#ifdef PRINT_MESSAGES
-		/* My message from the sponsor */
-		printk(FPU_VERSION " " __DATE__ " (C) W. Metzenthen.\n");
-#endif /* PRINT_MESSAGES */
-
 		/* Get a name string for error reporting */
 		for (i = 0; exception_names[i].type; i++)
 			if ((exception_names[i].type & n) ==