diff --git a/package/ead/src/tinysrp/acinclude.m4 b/package/ead/src/tinysrp/acinclude.m4
index 696fffc43020a576150b6f6e31d24fb46dc85a96..e0d0d04df53d8f7398b2d316aceeaa2bc3822617 100644
--- a/package/ead/src/tinysrp/acinclude.m4
+++ b/package/ead/src/tinysrp/acinclude.m4
@@ -16,11 +16,12 @@ extern void (*signal ()) ();], [],
 cv_has_posix_signals=yes, cv_has_posix_signals=no)])
 AC_MSG_RESULT($cv_has_posix_signals)
 if test $cv_has_posix_signals = yes; then
-   AC_DEFINE(RETSIGTYPE, void) AC_DEFINE(POSIX_SIGTYPE)
+   AC_DEFINE(RETSIGTYPE, void, [Return type is void])
+   AC_DEFINE(POSIX_SIGTYPE, [], [Have POSIX signals])
 else
   if test $ac_cv_type_signal = void; then
-     AC_DEFINE(RETSIGTYPE, void)
+     AC_DEFINE(RETSIGTYPE, void, [Return type is void])
   else
-     AC_DEFINE(RETSIGTYPE, int)
+     AC_DEFINE(RETSIGTYPE, int, [Return type is int])
   fi
 fi])dnl
diff --git a/package/ead/src/tinysrp/aclocal.m4 b/package/ead/src/tinysrp/aclocal.m4
index 7fb09ae69ae9f283bda827b4e855ae6807ef8f7f..703fce4b775b30e0a206262bdcfbec3e0e9c6037 100644
--- a/package/ead/src/tinysrp/aclocal.m4
+++ b/package/ead/src/tinysrp/aclocal.m4
@@ -28,12 +28,13 @@ extern void (*signal ()) ();], [],
 cv_has_posix_signals=yes, cv_has_posix_signals=no)])
 AC_MSG_RESULT($cv_has_posix_signals)
 if test $cv_has_posix_signals = yes; then
-   AC_DEFINE(RETSIGTYPE, void) AC_DEFINE(POSIX_SIGTYPE)
+   AC_DEFINE(RETSIGTYPE, void, [Return type is void])
+   AC_DEFINE(POSIX_SIGTYPE, [], [Have POSIX signals])
 else
   if test $ac_cv_type_signal = void; then
-     AC_DEFINE(RETSIGTYPE, void)
+     AC_DEFINE(RETSIGTYPE, void, [Return type is void])
   else
-     AC_DEFINE(RETSIGTYPE, int)
+     AC_DEFINE(RETSIGTYPE, int, [Return type is int])
   fi
 fi])dnl