diff --git a/ggml/src/ggml-metal.m b/ggml/src/ggml-metal.m
index b5939efa6..a7619bcca 100644
--- a/ggml/src/ggml-metal.m
+++ b/ggml/src/ggml-metal.m
@@ -1786,10 +1786,6 @@ static enum ggml_status ggml_metal_graph_compute(
                                     }
                             };
 
-                            if (ggml_is_quantized(src0t)) {
-                                GGML_ASSERT(ne00 >= nth0*nth1);
-                            }
-
                             [encoder setComputePipelineState:pipeline];
                             [encoder setBuffer:id_src0 offset:offs_src0 atIndex:0];
                             [encoder setBuffer:id_src1 offset:offs_src1 atIndex:1];
diff --git a/ggml/src/ggml-metal.metal b/ggml/src/ggml-metal.metal
index 2a3b0c0a6..3bb37d32a 100644
--- a/ggml/src/ggml-metal.metal
+++ b/ggml/src/ggml-metal.metal
@@ -4757,7 +4757,7 @@ void kernel_mul_mv_iq4_nl_f32_impl(
         device const float4 * y4 = (device const float4 *)yb;
         yl[0] = y4[0]; yl[1] = y4[4]; yl[2] = y4[1]; yl[3] = y4[5];
 
-        for (int row = 0; row < 2; ++row) {
+        for (int row = 0; row < 2 && first_row + row < ne01; ++row) {
 
             device const block_iq4_nl & xb = x[row*nb + ib];
             device const uint16_t * q4 = (device const uint16_t *)(xb.qs + 8*it);
@@ -4789,7 +4789,7 @@ void kernel_mul_mv_iq4_nl_f32_impl(
         yb += 16 * QK4_NL;
     }
 
-    for (int row = 0; row < 2; ++row) {
+    for (int row = 0; row < 2 && first_row + row < ne01; ++row) {
         all_sum = simd_sum(sumf[row]);
         if (tiisg == 0) {
             dst[r1*ne0 + im*ne0*ne1 + first_row + row] = all_sum;