diff --git a/Modules/_decimal/libmpdec/mpdecimal.h b/Modules/_decimal/libmpdec/mpdecimal.h
index e014f1c3a510..d131c71441f6 100644
--- a/Modules/_decimal/libmpdec/mpdecimal.h
+++ b/Modules/_decimal/libmpdec/mpdecimal.h
@@ -106,11 +106,6 @@ extern "C" {
   #endif
 #endif
 
-/* ASM isn't available in strict ansi C mode */
-#if defined(ASM) && defined(__STRICT_ANSI__)
-  #undef ASM
-  #define ANSI
-#endif
 
 /* BEGIN CONFIG_64 */
 #if defined(CONFIG_64)