diff --git a/cmake.changes b/cmake.changes
index bc190e8..078f53d 100644
--- a/cmake.changes
+++ b/cmake.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Aug 31 13:19:26 UTC 2021 - Ralf Habacker <ralf.habacker@freenet.de>
+
+- Be more verbose when version in generated xxxConfigVersion.cmake
+  files is empty.
+
 -------------------------------------------------------------------
 Sun Aug 29 13:38:36 UTC 2021 - Andreas Stieger <andreas.stieger@gmx.de>
 
diff --git a/cmake.prov b/cmake.prov
index b0d0092..2b0d692 100644
--- a/cmake.prov
+++ b/cmake.prov
@@ -69,7 +69,11 @@ class CMakeParser:
             # set(PACKAGE_VERSION <version>)
             version = re.match(r"^set[\ ]*\([\ ]*PACKAGE_VERSION[\ ]+[\"]*([0-9\.]+)[\"]*[\ ]*[.]*\)", line)
             if version:
-                return version.groups(1)[0]
+                _version = version.groups(1)[0]
+                if _version == '..':
+                    sys.stderr.write("error: Version pattern found without values - '%s' was created incorrectly\n" % versionFile)
+                return _version
+
 
         return None