diff --git a/configure.ac b/configure.ac
index ed08540..05e5f64 100644
--- a/configure.ac
+++ b/configure.ac
@@ -174,6 +174,10 @@ if test "x$HAVE_LIBIDN2" = "xyes" -o "x$HAVE_LIBIDN" = "xyes"; then
   LIBS=$OLDLIBS
 fi
 
+# AM_ICONV sets @LIBICONV@ and @LTLIBICONV@ for use in Makefile.am
+# do not use AM_ICONV conditionally
+AM_ICONV
+
 AM_CONDITIONAL([WITH_LIBICU], test "x$enable_runtime" = "xlibicu")
 AM_CONDITIONAL([WITH_LIBIDN2], test "x$enable_runtime" = "xlibidn2")
 AM_CONDITIONAL([WITH_LIBIDN], test "x$enable_runtime" = "xlibidn")
diff --git a/src/Makefile.am b/src/Makefile.am
index f600134..412e26f 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -27,10 +27,10 @@ if BUILTIN_GENERATOR_LIBICU
   psl2c_LDADD = -licuuc
 endif
 if BUILTIN_GENERATOR_LIBIDN2
-  psl2c_LDADD = -lidn2 -lunistring
+  psl2c_LDADD = @LTLIBICONV@ -lidn2 -lunistring
 endif
 if BUILTIN_GENERATOR_LIBIDN
-  psl2c_LDADD = -lidn -lunistring
+  psl2c_LDADD = @LTLIBICONV@ -lidn -lunistring
 endif
 
 # Build rule for suffix.c