diff --git a/gcc/config/mips/mips.h b/gcc/config/mips/mips.h
index b4a60a55d80..a159bb22381 100644
--- a/gcc/config/mips/mips.h
+++ b/gcc/config/mips/mips.h
@@ -2418,6 +2418,7 @@ enum reg_class
 /* True if MODE is vector and supported in a MSA vector register.  */
 #define MSA_SUPPORTED_MODE_P(MODE)			\
   (ISA_HAS_MSA						\
+   && (MODE) != MAX_MACHINE_MODE
    && GET_MODE_SIZE (MODE) == UNITS_PER_MSA_REG		\
    && (GET_MODE_CLASS (MODE) == MODE_VECTOR_INT		\
        || GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT))