diff --git a/doc/CMakeLists.txt b/doc/CMakeLists.txt
index 45fc08a3e..8492be3c6 100644
--- a/doc/CMakeLists.txt
+++ b/doc/CMakeLists.txt
@@ -107,10 +107,10 @@ you can also skip building the documentation by switching the option
 WSJT_GENERATE_DOCS to OFF.")
 endif (PYTHON_VERSION_STRING VERSION_GREATER 2.9.9)
 
-find_program (ASCIIDOC NAMES asciidoc asciidoc.py)
-if (NOT ASCIIDOC)
+find_program (ASCIIDOC_EXECUTABLE NAMES asciidoc asciidoc.py)
+if (NOT ASCIIDOC_EXECUTABLE)
   message (FATAL_ERROR "Asciidoc is required to build the documentation")
-endif (NOT ASCIIDOC)
+endif (NOT ASCIIDOC_EXECUTABLE)
 
 include (CMakeParseArguments)
 
@@ -128,7 +128,7 @@ function (html_document)
   add_custom_command (
     OUTPUT ${_doc_file}
     WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/${path}
-    COMMAND ${PYTHON_EXECUTABLE} ARGS ${ASCIIDOC} ${args_ASCIIDOC_OPTIONS} --out-file=${CMAKE_CURRENT_BINARY_DIR}/${_output_name_we}.html ${args_SOURCE}
+    COMMAND ${PYTHON_EXECUTABLE} ARGS ${ASCIIDOC_EXECUTABLE} ${args_ASCIIDOC_OPTIONS} --out-file=${CMAKE_CURRENT_BINARY_DIR}/${_output_name_we}.html ${args_SOURCE}
     DEPENDS ${args_DEPENDS}
     COMMENT "Generating ${_doc_file}"
     )