diff --git a/docs/CMakeLists.txt b/docs/CMakeLists.txt
index a645de61..1ae35c61 100644
--- a/docs/CMakeLists.txt
+++ b/docs/CMakeLists.txt
@@ -9,17 +9,6 @@
 # Contact KDAB at <info@kdab.com> for commercial licensing options.
 #
 
-# qhelpgenerator
-find_program(QHELPGEN_EXECUTABLE qhelpgenerator
-  HINTS ${QT_INSTALL_BINS}
-)
-if(QHELPGEN_EXECUTABLE)
-  set(HAVE_QHELPGEN "YES")
-else()
-  set(HAVE_QHELPGEN "NO")
-  message(STATUS "Unable to generate the API documentation in qch format. To fix, install the qthelpgenerator program which comes with Qt5.")
-endif()
-
 # Doxygen
 find_package(Doxygen)
 set_package_properties(Doxygen PROPERTIES
@@ -28,12 +17,6 @@ set_package_properties(Doxygen PROPERTIES
   URL "https://www.doxygen.org"
   PURPOSE "Needed to build the API documentation."
 )
-if(DOXYGEN_DOT_EXECUTABLE)
-  set(HAVE_DOT "YES")
-else()
-  set(HAVE_DOT "NO")
-  message(STATUS "Unable to provide inheritance diagrams for the API documentation. To fix, install the graphviz project from https://www.graphviz.org")
-endif()
 
 if(DOXYGEN_FOUND)
   add_subdirectory(api)
diff --git a/docs/api/CMakeLists.txt b/docs/api/CMakeLists.txt
index 7b732c17..d988ff02 100644
--- a/docs/api/CMakeLists.txt
+++ b/docs/api/CMakeLists.txt
@@ -9,6 +9,25 @@
 # Contact KDAB at <info@kdab.com> for commercial licensing options.
 #
 
+# dot should come with Doxygen find_package(Doxygen)
+if(DOXYGEN_DOT_EXECUTABLE)
+  set(HAVE_DOT "YES")
+else()
+  set(HAVE_DOT "NO")
+  message(STATUS "Unable to provide inheritance diagrams for the API documentation. To fix, install the graphviz project from https://www.graphviz.org")
+endif()
+
+# qhelpgenerator
+find_program(QHELPGEN_EXECUTABLE qhelpgenerator
+  HINTS ${QT_INSTALL_BINS}
+)
+if(QHELPGEN_EXECUTABLE)
+  set(HAVE_QHELPGEN "YES")
+else()
+  set(HAVE_QHELPGEN "NO")
+  message(STATUS "Unable to generate the API documentation in qch format. To fix, install the qthelpgenerator program which comes with Qt.")
+endif()
+
 find_file(QDOC_QTCORE_TAG qtcore.tags
   HINTS ${QT_INSTALL_DOCS}/qtcore
   HINTS ${QT_INSTALL_DATA}/doc/qtcore