diff --git a/CMake/FindExprTk.cmake b/CMake/FindExprTk.cmake
index b9a6f13a..bff26965 100644
--- a/CMake/FindExprTk.cmake
+++ b/CMake/FindExprTk.cmake
@@ -21,9 +21,9 @@ mark_as_advanced(ExprTk_INCLUDE_DIR)
 
 if (ExprTk_INCLUDE_DIR)
   file(STRINGS "${ExprTk_INCLUDE_DIR}/exprtk.hpp" _exprtk_version_header
-    REGEX "static const char\\* version")
-  string(REGEX MATCH "static const char\\* version = \"([0-9.]+)\"" _exprtk_version_match "${_exprtk_version_header}")
-  set(ExprTk_VERSION "${CMAKE_MATCH_1}")
+    REGEX "static (const char\\*|char_cptr) version")
+  string(REGEX MATCH "static (const char\\*|char_cptr) version = \"([0-9.]+)\"" _exprtk_version_match "${_exprtk_version_header}")
+  set(ExprTk_VERSION "${CMAKE_MATCH_2}")
   unset(_exprtk_version_header)
   unset(_exprtk_version_match)
 endif ()