diff --git a/ggml.c b/ggml.c
index 11d71c07a..d316e3d31 100644
--- a/ggml.c
+++ b/ggml.c
@@ -14415,7 +14415,7 @@ static void ggml_compute_forward_rope_f32(
             freq_factors = (const float *) src2->data;
         }
     } else {
-        GGML_ASSERT(src2 == NULL && "TODO: freq_factors not implemented for mode 1");
+        GGML_ASSERT(src2 == NULL && "TODO: freq_factors not implemented for !is_neox");
     }
 
     // backward process uses inverse rotation by cos and sin.
@@ -14531,6 +14531,7 @@ static void ggml_compute_forward_rope_f32(
     }
 }
 
+// TODO: deduplicate f16/f32 code
 static void ggml_compute_forward_rope_f16(
         const struct ggml_compute_params * params,
         struct ggml_tensor * dst,
@@ -14538,6 +14539,7 @@ static void ggml_compute_forward_rope_f16(
 
     const struct ggml_tensor * src0 = dst->src[0];
     const struct ggml_tensor * src1 = dst->src[1];
+    const struct ggml_tensor * src2 = dst->src[2];
 
     if (params->type == GGML_TASK_TYPE_INIT || params->type == GGML_TASK_TYPE_FINALIZE) {
         return;
@@ -14590,6 +14592,17 @@ static void ggml_compute_forward_rope_f16(
     const bool is_neox = mode & 2;
     const bool is_glm  = mode & 4;
 
+    const float * freq_factors = NULL;
+    if (is_neox) {
+        if (src2 != NULL) {
+            GGML_ASSERT(src2->type == GGML_TYPE_F32);
+            GGML_ASSERT(src2->ne[0] >= n_dims / 2);
+            freq_factors = (const float *) src2->data;
+        }
+    } else {
+        GGML_ASSERT(src2 == NULL && "TODO: freq_factors not implemented for !is_neox");
+    }
+
     // backward process uses inverse rotation by cos and sin.
     // cos and sin build a rotation matrix, where the inverse is the transpose.
     // this essentially just switches the sign of sin.
@@ -14662,10 +14675,11 @@ static void ggml_compute_forward_rope_f16(
 
                             // simplified from `(ib * n_dims + ic) * inv_ndims`
                             float cur_rot = inv_ndims * ic - ib;
+                            float freq_factor = freq_factors ? freq_factors[ic/2] : 1.0f;
 
                             float cos_theta, sin_theta;
                             rope_yarn(
-                                theta_base, freq_scale, corr_dims, cur_rot, ext_factor, attn_factor,
+                                theta_base/freq_factor, freq_scale, corr_dims, cur_rot, ext_factor, attn_factor,
                                 &cos_theta, &sin_theta
                             );
                             sin_theta *= sin_sign;