diff --git a/ggml/src/ggml-metal.metal b/ggml/src/ggml-metal.metal
index 224005d0a..b9ea9f08e 100644
--- a/ggml/src/ggml-metal.metal
+++ b/ggml/src/ggml-metal.metal
@@ -2816,7 +2816,7 @@ kernel void kernel_flash_attn_ext(
     threadgroup_barrier(mem_flags::mem_threadgroup);
 
     {
-        float S[Q] = { [0 ... Q-1] = 0.0h };
+        float S[Q] = { [0 ... Q-1] = 0.0f };
         float M[Q] = { [0 ... Q-1] = -FLT_MAX/2 };
 
         // thread indices inside the simdgroup
@@ -3064,7 +3064,7 @@ kernel void kernel_flash_attn_ext(
 
     // reduce the warps sequentially
     for (short sg = 1; sg < nsg; ++sg) {
-        float S = { 0.0h };
+        float S = { 0.0f };
         float M = { -FLT_MAX/2 };
 
         threadgroup_barrier(mem_flags::mem_threadgroup);
@@ -3263,7 +3263,7 @@ kernel void kernel_flash_attn_ext_vec(
 
     // zero out lo
     for (short i = 0; i < D16/NW4; i += NW4) {
-        lo[i] = float4x4(0.0h);
+        lo[i] = float4x4(0.0f);
     }
 
     // zero out shared memory SH
@@ -3274,7 +3274,7 @@ kernel void kernel_flash_attn_ext_vec(
     threadgroup_barrier(mem_flags::mem_threadgroup);
 
     {
-        float S = 0.0h;
+        float S = 0.0f;
         float M = -FLT_MAX/2;
 
         // thread indices inside the simdgroup