diff --git a/0ad.spec b/0ad.spec
index 72d81d8..f827855 100644
--- a/0ad.spec
+++ b/0ad.spec
@@ -17,15 +17,18 @@
 
 # Enable NVTT only on arch supported by nvidia-texture-tools
 %ifarch %{ix86} x86_64 ppc
-%bcond_without system_nvtt
+%bcond_without nvtt
 %else
-%bcond_with system_nvtt
+%bcond_with nvtt
 %endif
+#
 %if 0%{?suse_version} >= 1550
 %bcond_without system_mozjs
 %else
 %bcond_with system_mozjs
 %endif
+# Use provided library
+%bcond_without system_nvtt
 Name:           0ad
 Version:        0.0.24b
 Release:        0
@@ -100,10 +103,11 @@ build/workspaces/update-workspaces.sh \
     --bindir=%{_bindir} \
     --datadir=%{_datadir}/%{name} \
     --libdir=%{_libdir}/%{name} \
+%if %{with nvtt}
 %if %{with system_nvtt}
     --with-system-nvtt \
 %endif
-%ifnarch %{ix86} x86_64 ppc
+%else
     --without-nvtt \
 %endif
 %if %{with system_mozjs}