diff --git a/libfalcon.cpp b/libfalcon.cpp
index 3126c1edd..72ac5b3c8 100644
--- a/libfalcon.cpp
+++ b/libfalcon.cpp
@@ -21,6 +21,9 @@
 #ifdef GGML_USE_METAL
 #include "ggml-metal.h"
 #endif
+#ifndef QK_K
+#define QK_K 256
+#endif
 
 #include <array>
 #include <ctime>
@@ -2558,10 +2561,22 @@ static void falcon_model_quantize_internal(const std::string & fname_inp, const
         } else {
             new_type = quantized_type;
 #ifdef GGML_USE_K_QUANTS
+            if (quantized_type == GGML_TYPE_Q2_K || quantized_type == GGML_TYPE_Q3_K || quantized_type == GGML_TYPE_Q4_K ||
+                quantized_type == GGML_TYPE_Q5_K || quantized_type == GGML_TYPE_Q6_K) {
+                int nx = tensor.ne.at(0);
+                int ny = tensor.ne.at(0);
+                if (nx % QK_K != 0 || ny % QK_K != 0) {
+                    fprintf(stderr, "\n\n========================= Tensor sizes %d x %d are not divisible by %d\n",nx,ny,QK_K);
+                    fprintf(stderr, "This is required to be able to use k-quants for now!\n");
+                    fprintf(stderr, "========================================================================================\n\n");
+                    throw std::runtime_error("Unsupported tensor size encountered\n");
+                }
+            }
             // if (tensor.name == ".mlp.dense_") {
             //    new_type = GGML_TYPE_Q6_K;
             // } 
             // TODO falcon
+
 #endif
 
             float * f32_data;