diff --git a/mtapi_opencl_c/src/CL/cl_gl_ext.h b/mtapi_opencl_c/src/CL/cl_gl_ext.h
index 90996f2..5555dd1 100644
--- a/mtapi_opencl_c/src/CL/cl_gl_ext.h
+++ b/mtapi_opencl_c/src/CL/cl_gl_ext.h
@@ -41,7 +41,8 @@ extern "C" {
 
 /*
  * For each extension, follow this template
- * /* cl_VEN_extname extension  */
+ * // cl_VEN_extname extension
+ */
 /* #define cl_VEN_extname 1
  * ... define new types, if any
  * ... define new tokens, if any