diff --git a/configure.ac b/configure.ac
index 37a4cad939..b650ce88b7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1477,7 +1477,7 @@ GST_CHECK_FEATURE(SHOUT2, [shout2 plug-in], shout2send, [
   ])
 ])
 
-dnl *** sidplay ***
+dnl *** sidplay : works with libsidplay 1.36.x (not 2.x.x) ***
 translit(dnm, m, l) AM_CONDITIONAL(USE_SIDPLAY, true)
 GST_CHECK_FEATURE(SIDPLAY, [sidplay plug-in], sidplay, [
   GST_PATH_SIDPLAY()
diff --git a/m4/gst-sid.m4 b/m4/gst-sid.m4
index 0af8f3aa76..8ae287728a 100644
--- a/m4/gst-sid.m4
+++ b/m4/gst-sid.m4
@@ -2,7 +2,7 @@ dnl check for sidplay
 
 AC_DEFUN([GST_PATH_SIDPLAY],
 [
-AC_MSG_CHECKING([for libsidplay])
+AC_MSG_CHECKING([for libsidplay 1.36.x])
 
 AC_LANG_PUSH(C++)