diff --git a/backends/vulkan/runtime/graph/ops/glsl/all_shaders.yaml b/backends/vulkan/runtime/graph/ops/glsl/all_shaders.yaml
index f954528ee7e..a1abc6a7454 100644
--- a/backends/vulkan/runtime/graph/ops/glsl/all_shaders.yaml
+++ b/backends/vulkan/runtime/graph/ops/glsl/all_shaders.yaml
@@ -19,7 +19,7 @@ binary_op:
   shader_variants:
     - NAME: binary_add
     - NAME: binary_sub
-      OPERATOR: X - Y
+      OPERATOR: X - A * Y
     - NAME: binary_mul
       OPERATOR: X * Y
     - NAME: binary_div
diff --git a/backends/vulkan/test/test_vulkan_delegate.py b/backends/vulkan/test/test_vulkan_delegate.py
index 7def98df711..d18ca74588f 100644
--- a/backends/vulkan/test/test_vulkan_delegate.py
+++ b/backends/vulkan/test/test_vulkan_delegate.py
@@ -124,8 +124,8 @@ def __init__(self):
                 self.weight = torch.rand(size=(2, 3), dtype=torch.float32)
 
             def forward(self, x, y):
-                z = x + y
-                z = z + x
+                z = torch.add(x, y, alpha=2)
+                z = torch.add(x, y, alpha=3.14)
                 z = z + x
                 z = z + self.weight
                 return z
@@ -144,8 +144,8 @@ def __init__(self):
                 super().__init__()
 
             def forward(self, x, y):
-                z = x - y
-                z = z - x
+                z = torch.sub(x, y, alpha=2)
+                z = torch.sub(z, x, alpha=3.14)
                 z = z - x
                 return z