diff --git a/CMakeLists.txt b/CMakeLists.txt
index 24128218..3d6f635f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -567,15 +567,15 @@ foreach (man ${mans})
   # defined in that page. Defined means listed in a line ".B <name>"
   # between lines ".SH NAME" and ".SH LIBRARY". Ignore terminating ","
   # or spaces in .B line.
-  file(STRINGS ${man} manpage REGEX "^.(SH|B) ")
+  file(STRINGS ${man} manpage REGEX "^\\.(SH +NAME|SH +LIBRARY|B )")
   set(in_list 0)
   foreach (line ${manpage})
-    if ("${line}" STREQUAL ".SH NAME")
+    if ("${line}" MATCHES "^\\.SH +NAME")
       set(in_list 1)
-    elseif ("${line}" STREQUAL ".SH LIBRARY")
+    elseif ("${line}" MATCHES "^\\.SH +LIBRARY")
       set(in_list 0)
     elseif (${in_list})
-      string(REGEX REPLACE ".B *([^ ,]+).*" "\\1" alt "${line}")
+      string(REGEX REPLACE ".B +([^ ,]+).*" "\\1" alt "${line}")
       configure_file(${man} man3/${alt}.3 @ONLY)
     endif ()
   endforeach()