diff --git a/src/gallium/drivers/zink/nir_to_spirv/nir_to_spirv.c b/src/gallium/drivers/zink/nir_to_spirv/nir_to_spirv.c
index 95cea1b7168..21cad796814 100644
--- a/src/gallium/drivers/zink/nir_to_spirv/nir_to_spirv.c
+++ b/src/gallium/drivers/zink/nir_to_spirv/nir_to_spirv.c
@@ -2290,6 +2290,13 @@ emit_alu(struct ntv_context *ctx, nir_alu_instr *alu)
       break;
    }
 
+   case nir_op_ffma_weak: {
+      assert(nir_op_infos[alu->op].num_inputs == 3);
+      result = emit_builtin_triop(ctx, GLSLstd450Fma, dest_type,
+                                  src[0], src[1], src[2]);
+      break;
+   }
+
    default:
       fprintf(stderr, "emit_alu: not implemented (%s)\n",
               nir_op_infos[alu->op].name);
diff --git a/src/gallium/drivers/zink/zink_compiler.c b/src/gallium/drivers/zink/zink_compiler.c
index 17e8b9a5ffc..45da5317670 100644
--- a/src/gallium/drivers/zink/zink_compiler.c
+++ b/src/gallium/drivers/zink/zink_compiler.c
@@ -1304,6 +1304,7 @@ zink_screen_init_compiler(struct zink_screen *screen)
       .lower_mul_2x32_64 = true,
       .support_16bit_alu = true, /* not quite what it sounds like */
       .max_unroll_iterations = 0,
+      .float_mul_add32 = nir_float_muladd_support_keep_weak_ffma,
    };
 
    screen->nir_options = default_options;
@@ -1318,8 +1319,13 @@ zink_screen_init_compiler(struct zink_screen *screen)
        * stop Vulkan drivers from unrolling the loops.
        */
       screen->nir_options.max_unroll_iterations_fp64 = 32;
+   } else {
+      screen->nir_options.float_mul_add64 |= nir_float_muladd_support_keep_weak_ffma;
    }
 
+   if (screen->base.caps.fp16)
+      screen->nir_options.float_mul_add16 |= nir_float_muladd_support_keep_weak_ffma;
+
    /* XXX: do any drivers need different estimates? */
    screen->nir_options.varying_expression_max_cost = amd_varying_expression_max_cost;