diff --git a/runtime/os_interface/windows/CMakeLists.txt b/runtime/os_interface/windows/CMakeLists.txt
index c12b2d7b62..444c3f82b6 100644
--- a/runtime/os_interface/windows/CMakeLists.txt
+++ b/runtime/os_interface/windows/CMakeLists.txt
@@ -47,6 +47,7 @@ set(RUNTIME_SRCS_OS_INTERFACE_WINDOWS
   ${CMAKE_CURRENT_SOURCE_DIR}/sys_calls.h
   ${CMAKE_CURRENT_SOURCE_DIR}/thk_wrapper.h
   ${CMAKE_CURRENT_SOURCE_DIR}/wddm_32bit_memory.cpp
+  ${CMAKE_CURRENT_SOURCE_DIR}${BRANCH_DIR_SUFFIX}/wddm_allocation.cpp
   ${CMAKE_CURRENT_SOURCE_DIR}/wddm_allocation.h
   ${CMAKE_CURRENT_SOURCE_DIR}${BRANCH_DIR_SUFFIX}/wddm_additional_context_flags.cpp
   ${CMAKE_CURRENT_SOURCE_DIR}/wddm_device_command_stream.h
diff --git a/runtime/os_interface/windows/wddm_allocation.cpp b/runtime/os_interface/windows/wddm_allocation.cpp
new file mode 100644
index 0000000000..eb00f4f3e3
--- /dev/null
+++ b/runtime/os_interface/windows/wddm_allocation.cpp
@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) 2019 Intel Corporation
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+#include "runtime/os_interface/windows/wddm_allocation.h"
+
+namespace OCLRT {
+std::string WddmAllocation::getAllocationInfoString() const {
+    std::stringstream ss;
+    ss << " Handle: " << handle;
+    return ss.str();
+}
+} // namespace OCLRT
\ No newline at end of file
diff --git a/runtime/os_interface/windows/wddm_allocation.h b/runtime/os_interface/windows/wddm_allocation.h
index bd4e87a012..6302bb80ed 100644
--- a/runtime/os_interface/windows/wddm_allocation.h
+++ b/runtime/os_interface/windows/wddm_allocation.h
@@ -83,11 +83,7 @@ class WddmAllocation : public GraphicsAllocation {
     void setCpuAddress(void *cpuPtr) { this->cpuPtr = cpuPtr; }
     bool needsMakeResidentBeforeLock = false;
 
-    std::string getAllocationInfoString() const override {
-        std::stringstream ss;
-        ss << " Handle: " << handle;
-        return ss.str();
-    }
+    std::string getAllocationInfoString() const override;
 
   protected:
     ResidencyData residency;