diff --git a/config/isl.m4 b/config/isl.m4
index 152d422..831ac26 100644
--- a/config/isl.m4
+++ b/config/isl.m4
@@ -103,7 +103,7 @@ AC_DEFUN([ISL_REQUESTED],
 
 # _ISL_CHECK_CT_PROG(MAJOR, MINOR)
 # --------------------------------------------
-# Helper for verifying CLooG's compile time version.
+# Helper for verifying ISL compile time version.
 m4_define([_ISL_CHECK_CT_PROG],[AC_LANG_PROGRAM(
   [#include <isl/version.h>
 	[gcc_cv_isl=yes],