diff --git a/adoc/chapters/opencl_backend.adoc b/adoc/chapters/opencl_backend.adoc
index f6ea1785..37bc993c 100644
--- a/adoc/chapters/opencl_backend.adoc
+++ b/adoc/chapters/opencl_backend.adoc
@@ -1186,9 +1186,9 @@ capabilities defined in the OpenCL 1.2 specification document <<opencl12, par.
 6.12.13>>.
 
 
-== Precision of builtin math functions
+== Precision of built-in math functions
 
-When the builtin SYCL functions defined in sections <<sec:math-functions>>
+When the SYCL built-in functions defined in sections <<sec:math-functions>>
 through <<sec:relational-functions>> are called from a kernel running on the
 OpenCL backend, their precision is the same as the corresponding OpenCL
 functions as specified for the OpenCL profile.