diff --git a/src/compiler/nir/nir_lower_int64.c b/src/compiler/nir/nir_lower_int64.c
index 7900431ce2d..d5b161206bf 100644
--- a/src/compiler/nir/nir_lower_int64.c
+++ b/src/compiler/nir/nir_lower_int64.c
@@ -455,7 +455,7 @@ lower_mul_high64(nir_builder *b, nir_ssa_def *x, nir_ssa_def *y,
    for (unsigned i = 0; i < 4; i++) {
       nir_ssa_def *carry = NULL;
       for (unsigned j = 0; j < 4; j++) {
-         /* The maximum values of x32[i] and y32[i] are UINT32_MAX so the
+         /* The maximum values of x32[i] and y32[j] are UINT32_MAX so the
           * maximum value of tmp is UINT32_MAX * UINT32_MAX.  The maximum
           * value that will fit in tmp is
           *
@@ -466,7 +466,7 @@ lower_mul_high64(nir_builder *b, nir_ssa_def *x, nir_ssa_def *y,
           * so we're guaranteed that we can add in two more 32-bit values
           * without overflowing tmp.
           */
-         nir_ssa_def *tmp = nir_umul_2x32_64(b, x32[i], y32[i]);
+         nir_ssa_def *tmp = nir_umul_2x32_64(b, x32[i], y32[j]);
 
          if (res[i + j])
             tmp = nir_iadd(b, tmp, nir_u2u64(b, res[i + j]));