diff --git a/rpcs3/Emu/RSX/GL/GLVertexProgram.cpp b/rpcs3/Emu/RSX/GL/GLVertexProgram.cpp
index 49b83eb0d2..6874b9ef00 100644
--- a/rpcs3/Emu/RSX/GL/GLVertexProgram.cpp
+++ b/rpcs3/Emu/RSX/GL/GLVertexProgram.cpp
@@ -385,6 +385,12 @@ void GLVertexDecompilerThread::insertMainEnd(std::stringstream & OS)
 				OS << "	" << name << " = " << condition << "? " << i.src_reg << i.src_reg_mask << ": " << i.default_val << ";" << std::endl;
 			}
 		}
+		else if (i.need_declare && (rsx_vertex_program.output_mask & i.check_mask_value) > 0)
+		{
+			//An output was declared but nothing was written to it
+			//Set it to all ones (Atelier Escha)
+			OS << "	" << i.name << " = vec4(1.);" << std::endl;
+		}
 	}
 
 	if (insert_back_diffuse && insert_front_diffuse)
diff --git a/rpcs3/Emu/RSX/VK/VKVertexProgram.cpp b/rpcs3/Emu/RSX/VK/VKVertexProgram.cpp
index cecc019a22..47c5c250aa 100644
--- a/rpcs3/Emu/RSX/VK/VKVertexProgram.cpp
+++ b/rpcs3/Emu/RSX/VK/VKVertexProgram.cpp
@@ -349,6 +349,12 @@ void VKVertexDecompilerThread::insertMainEnd(std::stringstream & OS)
 				OS << "	" << i.name << " = " << condition << "? " << i.src_reg << i.src_reg_mask << ": " << i.default_val << ";" << std::endl;
 			}
 		}
+		else if (i.need_declare && (rsx_vertex_program.output_mask & i.check_mask_value) > 0)
+		{
+			//An output was declared but nothing was written to it
+			//Set it to all ones (Atelier Escha)
+			OS << "	" << i.name << " = vec4(1.);" << std::endl;
+		}
 	}
 
 	if (insert_back_diffuse && insert_front_diffuse)