diff --git a/configure.ac b/configure.ac
index 3e1d1ac..4ef8d19 100644
--- a/configure.ac
+++ b/configure.ac
@@ -70,7 +70,7 @@
 if test "$with_ruby" = "yes"; then
   AC_PATH_PROG([RUBY], [ruby])
 fi
-AM_CONDITIONAL(ENABLE_RUBY, [test -n "$RUBY"])
+AM_CONDITIONAL(WITH_RUBY, [test -n "$RUBY"])
 
 AC_C_CONST
 AC_C_INLINE
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 32240ae..3cb592c 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -17,7 +17,7 @@
 SUBDIRS += erl
 endif
 
-if ENABLE_RUBY
+if WITH_RUBY
 SUBDIRS += rb
 endif
 
diff --git a/test/Makefile.am b/test/Makefile.am
index bac5b06..dab0f4e 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -8,7 +8,7 @@
 SUBDIRS += py
 endif
 
-if ENABLE_RUBY
+if WITH_RUBY
 SUBDIRS += rb
 endif