diff --git a/ggml-cuda.cu b/ggml-cuda.cu
index 51ff390e3..34cda3f1e 100644
--- a/ggml-cuda.cu
+++ b/ggml-cuda.cu
@@ -1,6 +1,7 @@
 #include <algorithm>
 #include <cstddef>
 #include <cstdint>
+#include <cinttypes>
 #include <float.h>
 #include <limits>
 #include <stdint.h>
@@ -8016,10 +8017,11 @@ static void ggml_cuda_mul_mat(const ggml_tensor * src0, const ggml_tensor * src1
 #ifdef GGML_CUDA_FORCE_DMMV
             const bool use_mul_mat_vec_q = false;
 #else
-            const bool use_mul_mat_vec_q = min_compute_capability >= MIN_CC_DP4A && ggml_is_quantized(src0->type);
+            const bool use_mul_mat_vec_q = min_compute_capability >= MIN_CC_DP4A && ggml_is_quantized(src0->type) && ggml_nrows(src1) == 1;
 #endif // GGML_CUDA_FORCE_DMMV
 
             if (use_mul_mat_vec_q) {
+                // NOTE: this kernel does not support ggml_nrows(src1) > 1
                 ggml_cuda_op_mul_mat(src0, src1, dst, ggml_cuda_op_mul_mat_vec_q, true);
             } else {
                 ggml_cuda_op_mul_mat(src0, src1, dst, ggml_cuda_op_dequantize_mul_mat_vec, false);