diff --git a/doc/Doxyfile.cmake.in b/doc/Doxyfile.cmake.in
--- a/doc/Doxyfile.cmake.in
+++ b/doc/Doxyfile.cmake.in
@@ -38,7 +38,7 @@
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = ${CLIENT_VERSION_MAJOR}.${CLIENT_VERSION_MINOR}.${CLIENT_VERSION_REVISION}
+PROJECT_NUMBER         = ${bitcoin-abc_VERSION}
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/src/config/CMakeLists.txt b/src/config/CMakeLists.txt
--- a/src/config/CMakeLists.txt
+++ b/src/config/CMakeLists.txt
@@ -11,9 +11,9 @@
 set(PACKAGE_NAME "Bitcoin ABC" CACHE STRING "Package name")
 
 # Version
-set(CLIENT_VERSION_MAJOR ${bitcoin-abc_VERSION_MAJOR} CACHE STRING "Major version number")
-set(CLIENT_VERSION_MINOR ${bitcoin-abc_VERSION_MINOR} CACHE STRING "Minor version number")
-set(CLIENT_VERSION_REVISION ${bitcoin-abc_VERSION_PATCH} CACHE STRING "Revision version number")
+set(CLIENT_VERSION_MAJOR ${bitcoin-abc_VERSION_MAJOR})
+set(CLIENT_VERSION_MINOR ${bitcoin-abc_VERSION_MINOR})
+set(CLIENT_VERSION_REVISION ${bitcoin-abc_VERSION_PATCH})
 
 option(CLIENT_VERSION_IS_RELEASE "Build a release version" OFF)