diff --git a/lua-macros.changes b/lua-macros.changes
index 9940228..3fab09e 100644
--- a/lua-macros.changes
+++ b/lua-macros.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Sat Aug 28 09:42:55 UTC 2021 - Callum Farmer <gmbr3@opensuse.org>
+
+- Change usage of math to string.gsub to prevent extra decimal
+  places causing issues
+
 -------------------------------------------------------------------
 Fri Aug 27 10:07:01 UTC 2021 - Callum Farmer <gmbr3@opensuse.org>
 
diff --git a/macros.lua b/macros.lua
index f0e0c63..92e222a 100644
--- a/macros.lua
+++ b/macros.lua
@@ -2,7 +2,7 @@
 
 # The major.minor version of Lua
 %lua_version %(lua -e 'print(_VERSION)' | cut -d ' ' -f 2)
-%lua_version_nodots %(lua -e 'print(math.floor((%{lua_version}*10)))')
+%lua_version_nodots %(lua -e 'print((string.gsub("%{lua_version}", "%.", "")))')
 
 # compiled modules should go here
 %lua_archdir %{_libdir}/lua/%{lua_version}
@@ -14,7 +14,7 @@
 %lua_incdir %{_includedir}/lua%{lua_version}
 
 %lua_version_default 5.4
-%lua_version_default_nodots %(lua -e 'print(math.floor((%{lua_version_default}*10)))')
+%lua_version_default_nodots %(lua -e 'print((string.gsub("%{lua_version_default}", "%.", "")))')
 
 %ifluadefault \
 %if %{lua_version_nodots} == %{lua_version_default_nodots} \