diff --git a/gcc/testsuite/gcc.target/i386/avx512bw-vpmovuswb-2.c b/gcc/testsuite/gcc.target/i386/avx512bw-vpmovuswb-2.c
index d5198f39eb6..2311dfea34f 100644
--- a/gcc/testsuite/gcc.target/i386/avx512bw-vpmovuswb-2.c
+++ b/gcc/testsuite/gcc.target/i386/avx512bw-vpmovuswb-2.c
@@ -27,7 +27,7 @@ TEST (void)
   UNION_TYPE (AVX512F_LEN, i_w) src;
   MASK_TYPE mask = MASK_VALUE;
   unsigned char res_ref[32];
-  unsigned char res_ref2[SIZE];
+  unsigned char res_ref2[SIZE_HALF];
 
   for (i = 0; i < SIZE; i++)
     {
diff --git a/gcc/testsuite/gcc.target/i386/avx512bw-vpmovwb-2.c b/gcc/testsuite/gcc.target/i386/avx512bw-vpmovwb-2.c
index 6b0f86f57d8..ea91181284f 100644
--- a/gcc/testsuite/gcc.target/i386/avx512bw-vpmovwb-2.c
+++ b/gcc/testsuite/gcc.target/i386/avx512bw-vpmovwb-2.c
@@ -28,7 +28,7 @@ TEST (void)
   UNION_TYPE (AVX512F_LEN, i_w) src;
   MASK_TYPE mask = MASK_VALUE;
   char res_ref[32];
-  char res_ref2[SIZE];
+  char res_ref2[SIZE_HALF];
 
   sign = -1;
   for (i = 0; i < SIZE; i++)