diff --git a/ggml/src/ggml-opencl/kernels/tanh.cl b/ggml/src/ggml-opencl/kernels/tanh.cl
index 44da8d0e8b..2c4887ad3e 100644
--- a/ggml/src/ggml-opencl/kernels/tanh.cl
+++ b/ggml/src/ggml-opencl/kernels/tanh.cl
@@ -1,3 +1,5 @@
+#pragma OPENCL EXTENSION cl_khr_fp16 : enable
+
 kernel void kernel_tanh_f32(
         global const float * src0,
         ulong                offset0,