diff --git a/ILRepack/Steps/SigningStep.cs b/ILRepack/Steps/SigningStep.cs
index 72eed5fc..ad12a6a7 100644
--- a/ILRepack/Steps/SigningStep.cs
+++ b/ILRepack/Steps/SigningStep.cs
@@ -67,9 +67,11 @@ public void Perform()
                 }
                 _repackContext.TargetAssemblyDefinition.Name.PublicKey = publicKey;
                 _repackContext.TargetAssemblyDefinition.Name.Attributes |= AssemblyAttributes.PublicKey;
-                _repackContext.TargetAssemblyMainModule.Attributes |= ModuleAttributes.StrongNameSigned;
                 if (!_repackOptions.DelaySign)
+                {
+                    _repackContext.TargetAssemblyMainModule.Attributes |= ModuleAttributes.StrongNameSigned;
                     KeyPair = snkp;
+                }
             }
             else
             {