diff --git a/wmressel/configure.ac b/wmressel/configure.ac
index 5175cfa..91a9f0a 100644
--- a/wmressel/configure.ac
+++ b/wmressel/configure.ac
@@ -41,7 +41,6 @@ fi
 
 
 dnl Checks for typedefs, structures, and compiler characteristics.
-AC_C_CONST
 AC_TYPE_PID_T
 
 dnl Checks for library functions.