diff --git a/ggml-metal.metal b/ggml-metal.metal
index 742adc4ab..744b2a8b4 100644
--- a/ggml-metal.metal
+++ b/ggml-metal.metal
@@ -4540,7 +4540,7 @@ void kernel_mul_mv_iq1_m_f32_impl(
             const float delta1 = sumy[0] * (qh[0] & 0x08 ? -1 - IQ1M_DELTA : -1 + IQ1M_DELTA) + sumy[1] * (qh[0] & 0x80 ? -1 - IQ1M_DELTA : -1 + IQ1M_DELTA);
             const float delta2 = sumy[2] * (qh[1] & 0x08 ? -1 - IQ1M_DELTA : -1 + IQ1M_DELTA) + sumy[3] * (qh[1] & 0x80 ? -1 - IQ1M_DELTA : -1 + IQ1M_DELTA);
 #if QK_K == 64
-            const float d = (float) *(device const half *)(sc - 2);
+            const float d = (float) *((device const half *)(sc - 1));
             sumf[row] += d * ((sum[0] + delta1) * (2*((sc[0] >> (8*(ib%2)+0)) & 0xf) + 1) +
                               (sum[1] + delta2) * (2*((sc[0] >> (8*(ib%2)+4)) & 0xf) + 1));
 #else