diff --git a/libpsl.changes b/libpsl.changes
index cf97e99..0d47356 100644
--- a/libpsl.changes
+++ b/libpsl.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Apr  6 14:41:26 UTC 2017 - coolo@suse.com
+
+- Use idn2 runtime instead of libicu - as libicu requires 30MB
+  of unicode data - while idn2 is already part of minimal system
+
 -------------------------------------------------------------------
 Thu Jan 19 14:10:41 UTC 2017 - shshyukriev@suse.com
 
diff --git a/libpsl.spec b/libpsl.spec
index 186c01f..33dedf2 100644
--- a/libpsl.spec
+++ b/libpsl.spec
@@ -27,8 +27,8 @@ Group:          Development/Libraries/C and C++
 Url:            https://rockdaboot.github.io/libpsl
 Source:         https://github.com/rockdaboot/libpsl/releases/download/%{name}-%{version}/%{name}-%{version}.tar.gz
 Source1000:     baselibs.conf
-BuildRequires:  libicu-devel
 BuildRequires:  libidn2-devel >= 0.14
+BuildRequires:  libunistring-devel
 BuildRequires:  pkgconfig >= 0.9.0
 BuildRequires:  publicsuffix
 BuildRequires:  python-base >= 2.7
@@ -47,9 +47,9 @@ and sorting domain lists by site.
 
 %package -n %{name}%{somajor}
 Summary:        C library for the Publix Suffix List
+# The libary code is MIT, with built-in data from publicsuffix
 License:        MIT and MPL-2.0
 Group:          System/Libraries
-# The libary code is MIT, with built-in data from publicsuffix
 Recommends:     publicsuffix
 
 %description -n %{name}%{somajor}
@@ -95,6 +95,9 @@ and sorting domain lists by site.
 %setup -q
 
 %build
+# default is libicu, but this just too heavy dependency. This library is part of the 
+# minimal system as curl uses it - but libidn2 is already used by curl directly, while
+# icu is not
 %configure \
 	--disable-silent-rules \
 	--disable-static \
@@ -102,6 +105,7 @@ and sorting domain lists by site.
 	--disable-runtime \
 	--disable-builtin \
 %endif
+	--enable-builtin=libidn2 --enable-runtime=libidn2 \
 	--with-psl-file=%{_datadir}/publicsuffix/public_suffix_list.dat \
 	--with-psl-distfile=%{_datadir}/publicsuffix/public_suffix_list.dafsa