diff --git a/doc/CMakeLists.txt b/doc/CMakeLists.txt
index cfe3ec5..7c292cf 100644
--- a/doc/CMakeLists.txt
+++ b/doc/CMakeLists.txt
@@ -3,12 +3,12 @@
 
 find_program(pandoc_EXECUTABLE pandoc)
 find_package_handle_standard_args(pandoc
-    REQUIRED_VARS
-        pandoc_EXECUTABLE
+    DEFAULT_MSG
+    pandoc_EXECUTABLE
 )
 mark_as_advanced(pandoc_EXECUTABLE)
 set_package_properties(pandoc PROPERTIES
-    TYPE REQUIRED
+    TYPE OPTIONAL
     DESCRIPTION "A universal document converter. Used for generating manpages."
     URL "https://pandoc.org/"
 )