diff --git a/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
index bae3b4c2..b5bcd6a4 100644
--- a/cpp/CMakeLists.txt
+++ b/cpp/CMakeLists.txt
@@ -464,7 +464,7 @@ install(FILES "${CMAKE_CURRENT_SOURCE_DIR}/../RELEASE" DESTINATION "share/doc/ge
 if(${DISTRIBUTOR_ID} MATCHES "Ubuntu" OR ${DISTRIBUTOR_ID} MATCHES "Debian")
     SET(CPACK_GENERATOR "DEB")
 ELSEIF(${DISTRIBUTOR_ID} MATCHES "RedHat" OR ${DISTRIBUTOR_ID} MATCHES "CentOS")
-    string(REGEX MATCH "[0-9]*" RH_VERSION ${DISTRIBUTOR_RELEASE})
+    string(REGEX MATCH "[0-9]+" RH_VERSION ${DISTRIBUTOR_RELEASE})
     SET(DISTRIBUTION_CODENAME "el${RH_VERSION}")
     SET(CPACK_GENERATOR "RPM")
 ELSE()