diff --git a/cmake.changes b/cmake.changes
index 1ef7f4c..dd3dc6b 100644
--- a/cmake.changes
+++ b/cmake.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Apr 20 19:52:52 UTC 2023 - Callum Farmer <gmbr3@opensuse.org>
+
+- macros: substitute exactly once otherwise some non default values
+  won't work
+
 -------------------------------------------------------------------
 Wed Apr  5 16:34:32 UTC 2023 - Andreas Stieger <andreas.stieger@gmx.de>
 
diff --git a/cmake.macros b/cmake.macros
index 377d701..9cd25be 100644
--- a/cmake.macros
+++ b/cmake.macros
@@ -7,8 +7,8 @@
 %__builder %__make
 %__sourcedir .
 
-%__cmake_make_prefix_relative() %{lua:print((string.gsub((rpm.expand("%1")), ((rpm.expand("%{_prefix}")) .. "/"), "")))}
-%__cmake_make_root_relative() %{lua:print((string.gsub((rpm.expand("%1")), "/", "")))}
+%__cmake_make_prefix_relative() %{lua:print((string.gsub((rpm.expand("%1")), ((rpm.expand("%{_prefix}")) .. "/"), "", 1)))}
+%__cmake_make_root_relative() %{lua:print((string.gsub((rpm.expand("%1")), "/", "", 1)))}
 
 %cmake \
     find %__sourcedir -type f -name CMakeLists.txt \\\