diff --git a/ggml/src/iqk/iqk_gemm_legacy_quants.cpp b/ggml/src/iqk/iqk_gemm_legacy_quants.cpp
index eaf27c32..32ce78f2 100644
--- a/ggml/src/iqk/iqk_gemm_legacy_quants.cpp
+++ b/ggml/src/iqk/iqk_gemm_legacy_quants.cpp
@@ -1837,7 +1837,7 @@ bool iqk_convert_legacy_quants_q8_r8(int type, int n, const void * vx, size_t bx
         case GGML_TYPE_Q4_0  : iqk_convert_qX_q80_r8<block_q4_0, Q4_0_Dequantizer>(n, vx, bx, vy, nrc_x); break;
         case GGML_TYPE_Q4_1  : iqk_convert_qX_1_q8_1_r8<block_q4_1, Q4_1_Dequantizer>(n, vx, bx, vy, nrc_x); break;
         case GGML_TYPE_Q5_0  : iqk_convert_qX_q80_r8<block_q5_0, Q5_0_Dequantizer>(n, vx, bx, vy, nrc_x); break;
-        //case GGML_TYPE_Q5_1  : iqk_convert_qX_1_q8_1_r8<block_q5_1, Q5_1_Dequantizer>(n, vx, bx, vy, nrc_x); break;
+        case GGML_TYPE_Q5_1  : iqk_convert_qX_1_q8_1_r8<block_q5_1, Q5_1_Dequantizer<block_q5_1>>(n, vx, bx, vy, nrc_x); break;
         case GGML_TYPE_Q6_0  : iqk_convert_qX_q80_r8<block_q6_0, Q6_0_Dequantizer>(n, vx, bx, vy, nrc_x); break;
         case GGML_TYPE_IQ4_NL: iqk_convert_qX_q80_r8<block_iq4_nl, IQ4_NL0_Dequantizer>(n, vx, bx, vy, nrc_x); break;
         case GGML_TYPE_Q8_0  : iqk_convert_q80_q80_r8(n, vx, bx, vy, nrc_x); break;
diff --git a/ggml/src/iqk/iqk_mul_mat.cpp b/ggml/src/iqk/iqk_mul_mat.cpp
index a8700a54..cb5af73f 100644
--- a/ggml/src/iqk/iqk_mul_mat.cpp
+++ b/ggml/src/iqk/iqk_mul_mat.cpp
@@ -261,6 +261,7 @@ struct MulMat {
             case GGML_TYPE_Q4_0   : return nrc_y >= 32 ? GGML_TYPE_Q8_0_R8 : type;
             case GGML_TYPE_Q4_1   : return nrc_y >= 32 ? GGML_TYPE_Q8_1    : type;
             case GGML_TYPE_Q5_0   : return nrc_y >= 32 ? GGML_TYPE_Q8_0_R8 : type;
+            case GGML_TYPE_Q5_1   : return nrc_y >= 32 ? GGML_TYPE_Q8_1    : type;
             case GGML_TYPE_Q6_0   : return nrc_y >= 32 ? GGML_TYPE_Q8_0_R8 : type;
             case GGML_TYPE_IQ4_NL : return nrc_y >= 32 ? GGML_TYPE_Q8_0_R8 : type;
             case GGML_TYPE_Q8_0   : return nrc_y >= 32 ? GGML_TYPE_Q8_0_R8 : type;
@@ -412,7 +413,7 @@ bool iqk_convert_repack(int typeA, int n, const void * vx, size_t bx, void * vy,
         case GGML_TYPE_Q4_0:
         case GGML_TYPE_Q4_1:
         case GGML_TYPE_Q5_0:
-        //case GGML_TYPE_Q5_1:
+        case GGML_TYPE_Q5_1:
         case GGML_TYPE_Q6_0:
         case GGML_TYPE_Q8_0:
         case GGML_TYPE_IQ4_NL: