diff --git a/src/DataFilter.l b/src/DataFilter.l
index c2a678310..09ec7a2dd 100644
--- a/src/DataFilter.l
+++ b/src/DataFilter.l
@@ -21,7 +21,18 @@
 
 // need to get rid of this and use a string...
 #include <stdio.h>
-
+
+#ifdef YY_FLEX_SUBMINOR_VERSION
+# define YY_FLEX_VERSION               \
+  (YY_FLEX_MAJOR_VERSION) * 1000000 \
++ (YY_FLEX_MINOR_VERSION) * 1000    \
++ (YY_FLEX_SUBMINOR_VERSION)
+#else
+# define YY_FLEX_VERSION               \
+  (YY_FLEX_MAJOR_VERSION) * 1000000 \
++ (YY_FLEX_MINOR_VERSION) * 1000
+#endif
+
 // tokens
 #include "DataFilter_yacc.h"/* generated by the scanner */
 
@@ -105,12 +116,12 @@ int DataFiltercolumn = 1;
 .                   return DataFiltertext[0]; /* any other character, typically :, { or } */
 %%
 
-// Older versions of flex (prior to 2.5.9) do not have the destroy function
-// Or We're not using GNU flex then we also won't have a destroy function
-#if !defined(FLEX_SCANNER) || (YY_FLEX_SUBMINOR_VERSION < 9)
-int DataFilterlex_destroy(void) { return 0; }
-#endif
-
+// Older versions of flex (prior to 2.5.9) do not have the destroy function
+// Or We're not using GNU flex then we also won't have a destroy function
+#if !defined(FLEX_SCANNER) || (YY_FLEX_VERSION < 2005009)
+int DataFilterlex_destroy(void) { return 0; }
+#endif
+
 void DataFilter_setString(QString p)
 {
     BEGIN(0);