diff --git a/docs/how-to/hip_runtime_api/external_interop.rst b/docs/how-to/hip_runtime_api/external_interop.rst
index ab044c4350..72233326dc 100644
--- a/docs/how-to/hip_runtime_api/external_interop.rst
+++ b/docs/how-to/hip_runtime_api/external_interop.rst
@@ -63,16 +63,19 @@ The Vulkan external descriptor is defined in the following way:
 .. literalinclude:: ../../tools/example_codes/external_interop.hip
    :start-after: // [Sphinx external descriptor start]
    :end-before: // [Sphinx external descriptor end]
-
+    :language: cpp
+    
 The Vulkan semaphore is converted to HIP semaphore shown in the following example:
 
 .. literalinclude:: ../../tools/example_codes/external_interop.hip
    :start-after: // [Sphinx semaphore use in kernel start]
    :end-before: // [Sphinx semaphore use in kernel end]
-
+    :language: cpp
+    
 The external memory is used in the following example:
 
 .. literalinclude:: ../../tools/example_codes/external_interop.hip
    :start-after: // [Sphinx external memory use in kernel start]
    :end-before: // [Sphinx external memory use in kernel end]
-
+    :language: cpp
+