diff --git a/src/init.c b/src/init.c
index 8f6975c..b9a8ab3 100644
--- a/src/init.c
+++ b/src/init.c
@@ -323,12 +323,12 @@
         case cpuinfo_uarch_cortex_a53:
         case cpuinfo_uarch_cortex_a55:
           xnn_params.f32.gemm = (struct gemm_parameters) {
-            .gemm = (xnn_gemm_ukernel_function) xnn_f32_gemm_ukernel_4x12__aarch64_neonfma_cortex_a53,
-            .igemm = (xnn_igemm_ukernel_function) xnn_f32_igemm_ukernel_4x12__aarch64_neonfma_cortex_a53,
-            .gemm1 = (xnn_gemm_ukernel_function) xnn_f32_gemm_ukernel_1x12__aarch64_neonfma_cortex_a53,
-            .igemm1 = (xnn_igemm_ukernel_function) xnn_f32_igemm_ukernel_1x12__aarch64_neonfma_cortex_a53,
-            .mr = 4,
-            .nr = 12,
+            .gemm = (xnn_gemm_ukernel_function) xnn_f32_gemm_ukernel_6x8__aarch64_neonfma_cortex_a53,
+            .igemm = (xnn_igemm_ukernel_function) xnn_f32_igemm_ukernel_6x8__aarch64_neonfma_cortex_a53,
+            .gemm1 = (xnn_gemm_ukernel_function) xnn_f32_gemm_ukernel_1x8__aarch64_neonfma_cortex_a53,
+            .igemm1 = (xnn_igemm_ukernel_function) xnn_f32_igemm_ukernel_1x8__aarch64_neonfma_cortex_a53,
+            .mr = 6,
+            .nr = 8,
           };
           break;
         case cpuinfo_uarch_cortex_a73: