diff --git a/src/layer/arm/deconvolution_arm.cpp b/src/layer/arm/deconvolution_arm.cpp
index 97034ac3c6e..ef8a56f9931 100644
--- a/src/layer/arm/deconvolution_arm.cpp
+++ b/src/layer/arm/deconvolution_arm.cpp
@@ -1310,28 +1310,7 @@ int Deconvolution_arm::forward_bf16s(const Mat& bottom_blob, Mat& top_blob, cons
                             kptr += maxk;
                         }
 
-                        if (activation_type == 1)
-                        {
-                            sum = std::max(sum, 0.f);
-                        }
-                        else if (activation_type == 2)
-                        {
-                            float slope = activation_params[0];
-                            sum = sum > 0.f ? sum : sum * slope;
-                        }
-                        else if (activation_type == 3)
-                        {
-                            float min = activation_params[0];
-                            float max = activation_params[1];
-                            if (sum < min)
-                                sum = min;
-                            if (sum > max)
-                                sum = max;
-                        }
-                        else if (activation_type == 4)
-                        {
-                            sum = 1.f / (1.f + expf(-sum));
-                        }
+                        sum = activation_ss(sum, activation_type, activation_params);
 
                         outptr[j] = float32_to_bfloat16(sum);
                     }
diff --git a/src/layer/arm/deconvolutiondepthwise_arm.cpp b/src/layer/arm/deconvolutiondepthwise_arm.cpp
index 712ef4f7970..478bd1740dc 100644
--- a/src/layer/arm/deconvolutiondepthwise_arm.cpp
+++ b/src/layer/arm/deconvolutiondepthwise_arm.cpp
@@ -389,28 +389,7 @@ int DeconvolutionDepthWise_arm::forward(const Mat& bottom_blob, Mat& top_blob, c
                             }
                         }
 
-                        if (activation_type == 1)
-                        {
-                            sum = std::max(sum, 0.f);
-                        }
-                        else if (activation_type == 2)
-                        {
-                            float slope = activation_params[0];
-                            sum = sum > 0.f ? sum : sum * slope;
-                        }
-                        else if (activation_type == 3)
-                        {
-                            float min = activation_params[0];
-                            float max = activation_params[1];
-                            if (sum < min)
-                                sum = min;
-                            if (sum > max)
-                                sum = max;
-                        }
-                        else if (activation_type == 4)
-                        {
-                            sum = 1.f / (1.f + expf(-sum));
-                        }
+                        sum = activation_ss(sum, activation_type, activation_params);
 
                         outptr[j] = sum;
                     }
@@ -783,28 +762,7 @@ int DeconvolutionDepthWise_arm::forward_bf16s(const Mat& bottom_blob, Mat& top_b
                             }
                         }
 
-                        if (activation_type == 1)
-                        {
-                            sum = std::max(sum, 0.f);
-                        }
-                        else if (activation_type == 2)
-                        {
-                            float slope = activation_params[0];
-                            sum = sum > 0.f ? sum : sum * slope;
-                        }
-                        else if (activation_type == 3)
-                        {
-                            float min = activation_params[0];
-                            float max = activation_params[1];
-                            if (sum < min)
-                                sum = min;
-                            if (sum > max)
-                                sum = max;
-                        }
-                        else if (activation_type == 4)
-                        {
-                            sum = 1.f / (1.f + expf(-sum));
-                        }
+                        sum = activation_ss(sum, activation_type, activation_params);
 
                         outptr[j] = float32_to_bfloat16(sum);
                     }