diff --git a/cf/roken-frag.m4 b/cf/roken-frag.m4
index 3dcafd4db..103b939f9 100644
--- a/cf/roken-frag.m4
+++ b/cf/roken-frag.m4
@@ -26,7 +26,7 @@ dnl C characteristics
 AC_REQUIRE([AC_C___ATTRIBUTE__])
 AC_REQUIRE([AC_C_INLINE])
 AC_REQUIRE([AC_C_CONST])
-AC_WFLAGS(-Wall -Wmissing-prototypes -Wpointer-arith -Wbad-function-cast -Wmissing-declarations -Wnested-externs)
+rk_WFLAGS(-Wall -Wmissing-prototypes -Wpointer-arith -Wbad-function-cast -Wmissing-declarations -Wnested-externs)
 
 AC_REQUIRE([rk_DB])
 
diff --git a/configure.in b/configure.in
index 20bdfda6d..96424f1b1 100644
--- a/configure.in
+++ b/configure.in
@@ -55,7 +55,7 @@ AC_C___ATTRIBUTE__
 AC_ENABLE_SHARED(no)
 AC_PROG_LIBTOOL
 
-AC_WFLAGS(-Wall -Wmissing-prototypes -Wpointer-arith -Wbad-function-cast -Wmissing-declarations -Wnested-externs)
+rk_WFLAGS(-Wall -Wmissing-prototypes -Wpointer-arith -Wbad-function-cast -Wmissing-declarations -Wnested-externs)
 
 rk_TEST_PACKAGE(openldap,
 [#include <lber.h>